OFFSET
1,2
LINKS
Ray Chandler, Table of n, a(n) for n = 1..10000
Hao Fu, G.-N. Han, Computer assisted proof for Apwenian sequences related to Hankel determinants, arXiv preprint arXiv:1601.04370 [math.NT], 2016. See sequence "K" in Section 2.2.
MATHEMATICA
isok[n_]:=Module[{ord=IntegerExponent[n+1, 5]}, MemberQ[{2, 3}, Mod[(n+1)/5^ord, 5]]]; Select[Range[0, 131], isok] (*Ray Chandler, Dec 17 2016*)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 07 2016
EXTENSIONS
More terms from Ray Chandler, Dec 17 2016
STATUS
approved