OFFSET
1,2
COMMENTS
Note that the last term of the n-th row is the n-th cube A000578(n).
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
FORMULA
Sum_{k=1..n} T(n,k)= n*(n^3 + n^2 + n - 1)/2 (row sums). - R. J. Mathar, Jul 20 2009
EXAMPLE
Triangle begins:
1;
5, 8;
11, 19, 27;
19, 34, 49, 64;
29, 53, 77, 101, 125;
41, 76, 111, 146, 181, 216;
MATHEMATICA
Table[NestList[#+n^2-1&, n^2+n-1, n-1], {n, 20}]//Flatten (* Harvey P. Dale, Mar 02 2024 *)
PROG
(PARI) T(n, k)=n+k*(n^2-1) \\ Franklin T. Adams-Watters, Aug 06 2009
CROSSREFS
KEYWORD
AUTHOR
Omar E. Pol, Jul 09 2009
EXTENSIONS
More terms from Franklin T. Adams-Watters, Aug 06 2009
STATUS
approved