A023560 Convolution of A023531 and composite numbers (A002808).

0, 4, 6, 8, 13, 16, 20, 23, 29, 34, 40, 44, 47, 56, 64, 69, 73, 79, 85, 95, 102, 109, 116, 123, 129, 136, 147, 155, 165, 173, 179, 188, 200, 206, 216, 227, 237, 247, 255, 265, 275, 283, 291, 305, 318, 329, 339, 349, 359, 370, 381, 391, 402, 417, 430

Offset

1,2

Links

Table of n, a(n) for n=1..55.

Crossrefs

Cf. A002808, A023531.

Sequence in context: A008438 A141641 A145284 * A340960 A261680 A218465

Adjacent sequences: A023557 A023558 A023559 * A023561 A023562 A023563

Keyword

nonn

Author

Clark Kimberling

Extensions

Missing a(49)=359 inserted by Sean A. Irvine, Jun 06 2019

Status

approved