cp's OEIS Frontend

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

%I A221055 #11 Jul 17 2017 00:43:11
%S A221055 2,3,37,167,457,971,2927,6547,12343,16217,26237,105997,121487,246907,
%T A221055 273821,400997,562477,657361,708563,939931,1072447,1216867,1293701,
%U A221055 1456937,2027797,2135447,2604127,2997413,4410551,5564323,6209897,6435691,7647061,8442107
%N A221055 Primes of the form k*(k+1)*(k+2)/6+2 (i.e., two more than a tetrahedral number).
%t A221055 Select[Accumulate[Table[n*(n + 1)/2, {n, 0, 2000}]] + 2, PrimeQ]
%Y A221055 Cf. A000040, A000292, A055472.
%K A221055 nonn
%O A221055 1,1
%A A221055 _Jayanta Basu_, Apr 15 2013