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A117264 Self-convolution square-root of A117263. 1
1, 1, 3, 29, 831, 69107, 16944055, 12387543565, 27116679815367, 177967005474840987, 3503280999913078429261, 206872249547698485286567247, 36647212198301159763279385189667 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
PROG
(PARI) {a(n)=local(A2=vector(n+1, m, sum(k=0, m-1, 3^((m-k-1)*(m+k-2)/2)))); Vec(Ser(A2)^(1/2))[n+1]}
CROSSREFS
Sequence in context: A331389 A243435 A064570 * A256043 A065072 A088389
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Mar 14 2006
STATUS
approved

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Last modified March 1 08:00 EST 2024. Contains 370430 sequences. (Running on oeis4.)