I don't yet see how to separate the series itself/themselves from
cross-refs!
M
On 06/03/2022 12:18, 'Michael Day' via Programming wrote:
Late to the power party!
This is one way to automate the OEIS look-up - I'm not an expert on
parsing the result, but hunting for 'A', a single digit seems
a good starter:
OEIS =: 'http://oeis.org/search?q=' NB. fails with https://... !
getoeisseries =:{{ {{(-.{.) ' ',,/ y&{{~.x{~(i.7)+/~ x I.@:E.~
'A',y}}"0 '0123456789' }} RAW=:gethttp OEIS,commas y}}
getoeisseries 5 9 15 23 33 45 59
A027688
A002522
A007954
A176271
A118403
A118401
A118400
A118407
A118402
A134586
where commas is what I always use to format series for OEIS searches:
commas =: 3 : 0 NB. crude - I forget how to format negatives using -
with some ": variant!!!
q =. 1|.' '-.~,','&,@:":"0 y
if. # imin=. I. q = '_' do.
q =. '-' imin } q
end.
)
Not a primitive adverb, but it's my starter for 10,
Mike
On 06/03/2022 06:36, Ian Clark wrote:
Let's cheat and look it up in oeis.org …
Skip's sequence is A027688, dropping the first term
A027688 is defined as: (n^2 + n + 3)
but (n*n + n + 3) gives better results with (13 :)
q=: 13 : '(y*y) + y + 3'
q
*~ + 3 + ]
q >:i.10
5 9 15 23 33 45 59 75 93 113
Has anyone tried automating OEIS lookup? It could be the basis for a
nifty
new primitive adverb: (...) as in:
5 9 15 23 33 ...
On Sun, 6 Mar 2022 at 02:11, Elijah Stone <elro...@elronnd.net> wrote:
Ah, David beat me to it! :)
On Sat, 5 Mar 2022, Elijah Stone wrote:
Here's how I would do it:
3++/\+:i.10
3 5 9 15 23 33 45 59 75 93
This preserves the 'missing' initial term of 3. If you don't want it,
replace i.10 with >:i.10.
-E
On Sat, 5 Mar 2022, 'Skip Cave' via Programming wrote:
I have this series:
5 9 15 23 33 ....
5+4
9
9+6
15
15+8
23
23+10
33
How can I use the power conjunction to generate this series?
Is there a more concise method to generate this than the power
conjunction?
Skip
Skip Cave
Cave Consulting LLC
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