[seqfan] Re: 3-sequences relations using Robert Gerbicz's seeker.c

Georgi Guninski guninski at guninski.com
Mon Aug 30 16:33:35 CEST 2010

second stage of the experiment, 3 sequences relations, adjusting offset.

looking for seq: f,g,h in OEIS

f[n+1]=g[n+k1] {+,-,*,/} h[n+k2] , 0 <= k1,k2 <= 3

~ 1.2 million relations, 414 minutes: 

selected relation:

A171487[n+1] =A128060[n+2]*A128060[n+3]
(verified to 5000)

A171487 Product of odd prime anti-factors < n, with multiplicity.
A128060 a(n)=2n-numerator((2n-1)^2/(2*(2n)!)).

web interface:

the database in oeis format:
(7.7M, decompresses to 60M)

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