OFFSET
0,2
COMMENTS
Old name was: Partial sums of A051799.
REFERENCES
A. H. Beiler, Recreations in the Theory of Numbers, Dover, N.Y., 1964, pp. 194-196.
Herbert John Ryser, Combinatorial Mathematics, "The Carus Mathematical Monographs", No. 14, John Wiley and Sons, 1963, pp. 1-16.
LINKS
Index entries for linear recurrences with constant coefficients, signature (6,-15,20,-15,6,-1).
FORMULA
a(n) = C(n+4, 4)*(2n+1).
G.f.: (1+9*x)/(1-x)^6.
MATHEMATICA
Nest[Accumulate[#]&, Table[n(n+1)(10n-7)/6, {n, 0, 50}], 2] (* Harvey P. Dale, Nov 13 2013 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Barry E. Williams, Dec 14 1999
EXTENSIONS
Name changed by Alois P. Heinz, Jan 09 2017
STATUS
approved