Primes of the form k*(k+1)*(k+2)/6+2 (i.e., two more than a tetrahedral number).
A221055
Primes of the form k*(k+1)*(k+2)/6+2 (i.e., two more than a tetrahedral number).
Terms
- a(0) =2a(1) =3a(2) =37a(3) =167a(4) =457a(5) =971a(6) =2927a(7) =6547a(8) =12343a(9) =16217a(10) =26237a(11) =105997a(12) =121487a(13) =246907a(14) =273821a(15) =400997a(16) =562477a(17) =657361a(18) =708563a(19) =939931a(20) =1072447a(21) =1216867a(22) =1293701a(23) =1456937a(24) =2027797a(25) =2135447a(26) =2604127a(27) =2997413a(28) =4410551a(29) =5564323
External references
- oeis: A221055