A221055 Primes of the form k*(k+1)*(k+2)/6+2 (i.e., two more than a tetrahedral number).

2, 3, 37, 167, 457, 971, 2927, 6547, 12343, 16217, 26237, 105997, 121487, 246907, 273821, 400997, 562477, 657361, 708563, 939931, 1072447, 1216867, 1293701, 1456937, 2027797, 2135447, 2604127, 2997413, 4410551, 5564323, 6209897, 6435691, 7647061, 8442107

Offset: 1

Author

Jayanta Basu, Apr 15 2013

Keywords

• nonn

Crossrefs

Cf. A000040, A000292, A055472.

Programs

Mathematica

Select[Accumulate[Table[n*(n + 1)/2, {n, 0, 2000}]] + 2, PrimeQ]