OFFSET
0,5
COMMENTS
EXAMPLE
Triangle begins:
1;
1, 1;
1, 2, 1;
1, 3, 4, 1;
1, 4, 10, 7, 1;
1, 5, 20, 28, 11, 1;
1, 6, 35, 84, 66, 16, 1;
1, 7, 56, 210, 286, 136, 22, 1;
1, 8, 84, 462, 1001, 816, 253, 29, 1; ...
MATHEMATICA
Table[Binomial[(k(k+1))/2+n-k, n-k], {n, 0, 20}, {k, 0, n}]//Flatten (* Harvey P. Dale, Mar 22 2016 *)
PROG
(PARI) T(n, k)=if(n<k||k<0, 0, binomial(k*(k+1)/2+n-k, n-k))
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Paul D. Hanna, Aug 25 2006
STATUS
approved