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A309269 Numbers that are the sum of two successive prime powers. 0
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 (list; graph; refs; listen; history; text; internal format)
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: A219087 A186705 A072154 * A204206 A080751 A025218

Adjacent sequences:  A309266 A309267 A309268 * A309270 A309271 A309272

KEYWORD

nonn

AUTHOR

Ilya Gutkovskiy, Jul 20 2019

STATUS

approved

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Last modified June 21 07:27 EDT 2021. Contains 345358 sequences. (Running on oeis4.)