References to A115335

a(n) = 2*Abs[(1/2)*(-1+(-2)^n)-(2/3)*(2+(-2)^n)*UnitStep[ -1+n]].
3, 5, 1, 9, 7, 25, 39, 89, 167, 345, 679, 1369, 2727, 5465, 10919, 21849, 43687

2 seqfan posts

Sat Dec 5 10:09:05 CET 2009    [seqfan] Re: A001045 General form: k=2^n-k
Sat Dec 5 04:05:23 CET 2009    [seqfan] A001045 General form: k=2^n-k
Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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