A061412 Numbers k such that m*2^k + 1 is prime for exactly one coefficient m in the range 0 <= m <= k.

1, 2, 3, 4, 5, 18, 21, 23, 24, 26, 30, 32, 34, 35, 56, 57, 58, 59, 69, 70, 71, 87, 95, 96, 97, 106, 107, 108, 109, 112, 116, 120, 121, 131, 137, 139, 140, 142, 150, 151, 156, 159, 161, 163, 171, 172, 176, 177, 178, 181, 191, 192, 194, 195, 196, 197, 212, 219, 220

Offset

1,2

Comments

For corresponding coefficient values see A061413.

Links

Table of n, a(n) for n=1..59.

Crossrefs

Cf. A061410, A061411, A061413, A061414, A061415.

Sequence in context: A317944 A145520 A337559 * A295317 A165646 A261639

Adjacent sequences: A061409 A061410 A061411 * A061413 A061414 A061415

Keyword

nonn

Author

Patrick De Geest, May 15 2001

Extensions

Name edited and Offset changed by Jon E. Schoenfield, Oct 26 2019

Status

approved