OFFSET
0,2
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..64
FORMULA
a(n) ~ 7^(7*n+7/3) * n^(1/6) * (sin(Pi/7)/Pi)^(7*n+7/6) * (7*n)! / (6^(1/6) * Gamma(1/6)).
PROG
(PARI) {a(n) = local(A=x); A = serreverse( intformal( 1/(1 + x^7 + O(x^(7*n+2))) ) ); (7*n+1)!*polcoeff(A, 7*n+1)}
for(n=0, 20, print1(a(n), ", ")) \\ after Paul D. Hanna
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Jun 18 2015
STATUS
approved