OFFSET
3,1
LINKS
Alois P. Heinz, Table of n, a(n) for n = 3..200
FORMULA
Recurrence (for n>=6): (n-5)*a(n) = (2*n^2 - 15*n + 26)*a(n-1) - (n-4)^2*(n-3)*a(n-2). - Vaclav Kotesovec, Sep 02 2014
a(n) ~ 2 * n! * (log(n) + gamma) / n^2, where gamma is the Euler-Mascheroni constant (A001620). - Vaclav Kotesovec, Sep 02 2014
MATHEMATICA
Flatten[{5, 8, 26, RecurrenceTable[{-(-4+n)^2 (-3+n) a[-2+n]+(26-15 n+2 n^2) a[-1+n]+(5-n) a[n]==0, a[6]==112, a[7]==596}, a, {n, 6, 25}]}] (* Vaclav Kotesovec, Sep 02 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 04 2012
EXTENSIONS
More terms from Alois P. Heinz, May 30 2012
STATUS
approved