OFFSET
0,3
LINKS
Robert Israel, Table of n, a(n) for n = 0..403
FORMULA
a(n) ~ 7 * exp(1/4) * 2^(n+3) * n! * n^(1/4) / (15*Gamma(1/4)). - Vaclav Kotesovec, Jul 09 2015
MAPLE
f:= gfun:-rectoproc({n*a(n+1) = (2*n^2 + 3*n + 2)*a(n) - (n^2 - n - 2)*a(n-1), a(0)=0, a(1)=1}, a(n), remember):
map(f, [$0..30]); # Robert Israel, Jan 29 2018
MATHEMATICA
RecurrenceTable[{a[0] == 0, a[1] == 1, n a[n + 1] == (2 n^2 + 3 n + 2) a[n] - (n + 1) (n - 2) a[n - 1]}, a, {n, 30}]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
G. C. Greubel, Jul 07 2015
STATUS
approved