A226766 Least number k such that 4^(2^i) + k is prime for i = 0,1,..,n-1.

1, 1, 1, 1, 15, 93, 53097, 3014907, 2295032545, 46868723367

Offset

1,5

Comments

a(7) = 53097 < A129613(7) (base-2 version).

Links

Table of n, a(n) for n=1..10.

Crossrefs

Cf. A129613, A225560, A226281, A226707

Sequence in context: A108684 A125325 A126483 * A114240 A189657 A190274

Adjacent sequences: A226763 A226764 A226765 * A226767 A226768 A226769

Keyword

nonn,more

Author

Robin Garcia, Jun 17 2013

Extensions

a(10) from Giovanni Resta, Jun 17 2013

Status

approved