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

1,1

Links

Table of n, a(n) for n=1..34.

Mathematica

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

Crossrefs

Cf. A000040, A000292, A055472.

Sequence in context: A118370 A189027 A061576 * A144466 A245061 A270587

Adjacent sequences: A221052 A221053 A221054 * A221056 A221057 A221058

Keyword

nonn

Author

Jayanta Basu, Apr 15 2013

Status

approved