References to A040076

Smallest m >= 0 such that n*2^m+1 is prime, or -1 if no such m exists.
0, 0, 1, 0, 1, 0, 2, 1, 1, 0, 1, 0, 2, 1, 1, 0, 3, 0, 6, 1, 1, 0, 1, 2, 2, 1, 2, 0, 1, 0, 8, 3, 1, 2

1 seqfan posts