OFFSET
0,5
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..450
MATHEMATICA
RecurrenceTable[{a[n + 4] == (n + 2)*(a[n + 3] - a[n] + 1), a[0] == 1, a[1] == 1, a[2] == 1, a[3] == 1}, a, {n, 0, 50}] (* G. C. Greubel, Sep 14 2017 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Roger L. Bagula, Sep 10 2006
EXTENSIONS
Edited by N. J. A. Sloane, Jun 17 2007
Edited and name changed by G. C. Greubel, Sep 14 2017
STATUS
approved