A309269 Numbers that are the sum of two successive prime powers.

3, 5, 7, 9, 12, 15, 17, 20, 24, 29, 33, 36, 42, 48, 52, 56, 60, 63, 69, 78, 84, 90, 96, 102, 112, 120, 125, 131, 138, 144, 152, 160, 164, 172, 186, 198, 204, 210, 216, 222, 234, 246, 252, 255, 259, 268, 276, 288, 300, 308, 320, 330, 336, 342, 352, 360, 372, 384, 390, 396

Offset

1,1

Links

Table of n, a(n) for n=1..60.

Formula

a(n) = A000961(n) + A000961(n+1).

Mathematica

Join[{3}, Total /@ Partition[Select[Range[200], PrimePowerQ], 2, 1]]

Crossrefs

Cf. A000961, A001043, A024918, A057820.

Sequence in context: A361516 A361515 A072154 * A362135 A204206 A080751

Adjacent sequences: A309266 A309267 A309268 * A309270 A309271 A309272

Keyword

nonn

Author

Ilya Gutkovskiy, Jul 20 2019

Status

approved