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A221055 Primes of the form k*(k+1)*(k+2)/6+2 (i.e., two more than a tetrahedral number). 0
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 18 09:40 EDT 2019. Contains 327168 sequences. (Running on oeis4.)