OFFSET
0,23
FORMULA
Empirical g.f.: x^21 / ((x-1)^2*(x^20+x^15+x^10+x^5+1)). - Colin Barker, Apr 01 2013
MATHEMATICA
Table[Total[Table[Floor[(n+d)/25], {d, 0, 4}]], {n, 0, 90}] (* Harvey P. Dale, Sep 04 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Mar 28 2004
STATUS
approved