[seqfan] Re: Change A186750 to start off 0, -3, 6?
alois.heinz at hs-heilbronn.de
Fri Apr 8 20:19:42 CEST 2016
I vote con:
1) There is no need to change it.
2) It would no longer be in line with A001566 or A186751 which are
Best regards, Alois
Am 08.04.2016 um 20:10 schrieb Alonso Del Arte:
> Should we change A186750 to start off 0, -3, 6 instead of 3, 6? This
> would be to bring it in line with A072191, a(n) = a(n-1)^2 + 2, redefining
> A186750 as a(n) = a(n-1)^2 - 3.
> Pro: Adding the initial 0 allows this sequence to come up in searches that
> currently result in no matches. The Mathematica can be simplified to
> - 3 &, 0, 9].
> Con: It would make this a keyword:sign sequence just for one term. The
> sequence starting 3, 6 is part of an array.
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