A215646 n * (11*n^2 + 6*n + 1) / 6.

0, 3, 19, 59, 134, 255, 433, 679, 1004, 1419, 1935, 2563, 3314, 4199, 5229, 6415, 7768, 9299, 11019, 12939, 15070, 17423, 20009, 22839, 25924, 29275, 32903, 36819, 41034, 45559, 50405, 55583, 61104, 66979, 73219, 79835, 86838, 94239, 102049, 110279, 118940

Offset: 0

Author

Reinhard Zumkeller, Nov 11 2012

Keywords

• nonn

Comments

For n > 0: sums of rows of triangle in A215631.

Programs

Haskell

a215646 n = n * (n * (11*n + 6) + 1) `div` 6

Maxima

A215646(n):=n*(11*n^2+6*n+1)/6$
makelist(A215646(n),n,0,20); /* Martin Ettl, Nov 12 2012 */