A193576 T(n)^3+n^3 where T(n) is a triangular number.

2, 35, 243, 1064, 3500, 9477, 22295, 47168, 91854, 167375, 288827, 476280, 755768, 1160369, 1731375, 2519552, 3586490, 5006043, 6865859, 9269000, 12335652, 16204925, 21036743, 27013824, 34343750, 43261127, 54029835, 66945368, 82337264, 100571625, 122053727

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..10000

Formula

a(n) = (n^3*(n^3+3*n^2+3*n+9)/8) = (1/8)*(n+3)*(n^2+3)*n^3

Prog

(Magma)[(n^3*(n^3+3*n^2+3*n+9)/8): n in [1..40]]

Crossrefs

Sequence in context: A257601 A282727 A042353 * A297538 A089660 A058089

Adjacent sequences: A193573 A193574 A193575 * A193577 A193578 A193579

Keyword

nonn,easy

Author

Vincenzo Librandi, Sep 08 2011

Status

approved