A288413 Primes of the form k!2+1024, where k!2 is the double factorial number (A006852).

1039, 1129, 13749311599, 6332659870762851649, 1408316897580354679543222894676508168024833284165925995774150107832775465649821970462037757921294414350725483019407292942600250244141649

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..7

Henri& Renaud Lifchitz, PRP Records.Search for n!2+1024.

Joe McLean, Interesting Sources of Probable Primes

OpenPFGW Project, Primality Tester

Mathematica

MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 2] + 1024, {i, 0, 100}], PrimeQ[#]&]

Crossrefs

Cf. A076197.

Sequence in context: A251868 A074673 A235156 * A020395 A069456 A210259

Adjacent sequences: A288410 A288411 A288412 * A288414 A288415 A288416

Keyword

nonn

Author

Robert Price, Jun 08 2017

Status

approved