OFFSET
0,2
COMMENTS
Hankel transform of A185994.
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..20
FORMULA
a(n) = Product_{k=0..n} (2^(2k+1))^(n-k).
a(n) = 2^A000330(n).
a(n) = 2^(1/6*n*(2*n^2+3*n+1)). - Alexander R. Povolotsky, Feb 13 2011
MATHEMATICA
Table[2^(1/6*n*(2*n^2 + 3*n + 1)), {n, 0, 25}] (* G. C. Greubel, Feb 20 2017
Table[2^(Binomial[2n+2, 3]/4), {n, 0, 10}] (* Harvey P. Dale, Sep 13 2024 *)
PROG
(PARI) for(n=0, 15, print1(2^(1/6*n*(2*n^2 + 3*n + 1)), ", ")) \\ G. C. Greubel, Feb 20 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Paul Barry, Feb 08 2011
STATUS
approved