OFFSET
0,2
REFERENCES
David Pagni, Building buildings with triangular numbers, AMATYC Review (vol. 27 no. 2 spring 2006, pp. 56-65).
MATHEMATICA
a = 10; lst = {0}; s = 0; t = Flatten@ Table[ Table[n*(n + 3)/2, {n}], {n, a}]; Do[ AppendTo[lst, s = s + t[[n]]], {n, a(a+1)/2}]; lst (* Robert G. Wilson v, Jun 16 2006 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 13 2006
EXTENSIONS
More terms from Robert G. Wilson v, Jun 16 2006
STATUS
approved