A229854 - OEIS

A229854

Primes of the form 384*n + 1.

769, 1153, 2689, 3457, 4993, 6529, 7297, 7681, 9601, 10369, 10753, 12289, 13441, 14593, 15361, 18049, 18433, 20353, 21121, 22273, 23041, 26113, 26497, 26881, 29569, 31489, 31873, 32257, 33409, 36097, 37633, 39937, 43777, 45697, 49537, 49921, 52609, 53377

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OFFSET

1,1

COMMENTS

Not every composite Fermat number has a prime factor of the form 384*n + 1.

LINKS

Table of n, a(n) for n=1..38.

Wikipedia, Fermat number

MATHEMATICA

Select[Table[384*n + 1, {n, 139}], PrimeQ]

PROG

(Magma) [384*n+1 : n in [1..139] | IsPrime(384*n+1)]