A330031 Sums of two nonzero tetrahedral numbers (A000292).

2, 5, 8, 11, 14, 20, 21, 24, 30, 36, 39, 40, 45, 55, 57, 60, 66, 70, 76, 85, 88, 91, 94, 104, 112, 119, 121, 124, 130, 140, 155, 166, 168, 169, 175, 176, 185, 200, 204, 221, 224, 230, 240, 249, 255, 276, 285, 287, 290, 296, 304, 306, 321, 330, 340, 342, 365

Offset

1,1

Links

Peter Kagey, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000292, A102798, A104246.

Analogs for other figurate numbers are A000404 (squares), A003325 (cubes), A051533 (triangular numbers), A286636 (centered square numbers), A287960 (centered triangular numbers), A288631 (square pyramidal numbers), A332987 (pentagonal numbers).

Sequence in context: A000093 A324476 A070214 * A031210 A287960 A102795

Adjacent sequences: A330028 A330029 A330030 * A330032 A330033 A330034

Keyword

nonn

Author

Peter Kagey, Mar 07 2020

Status

approved