A114872 Even numbers not representable as (p-1)p^k (where p is a prime and k>=0) in ascending order.

14, 24, 26, 34, 38, 44, 48, 50, 56, 62, 68, 74, 76, 80, 84, 86, 90, 92, 94, 98, 104, 114, 116, 118, 120, 122, 124, 132, 134, 140, 142, 144, 146, 152, 154, 158, 160, 164, 168, 170, 174, 176, 182, 184, 186, 188, 194, 200, 202, 204, 206, 208, 212, 214, 216, 218

Offset: 1

Author

Franz Vrabec, Jan 03 2006

Keywords

• nonn

Examples

			It is easy to check there is no prime p with 14=(p-1)*p^k and k>=0.
		

Crossrefs

Cf. A114871.

Programs

Mathematica

s = Split@ Sort@ Flatten@ Table[(Prime[n] - 1)Prime[n]^k, {n, 60}, {k, 0, 7}]; Complement[ 2Range@116, Take[Union@ Flatten@ s, {2, 58}]] (* Robert G. Wilson v *)

Extensions

More terms from Robert G. Wilson v, Jan 05 2006