A030282 COMPOSE primes with natural numbers.

2, 7, 23, 75, 242, 772, 2430, 7529, 22941, 68801, 203488, 594994, 1724242, 4963041, 14213111, 40540661, 115235882, 326470662, 921780312, 2593408123, 7269728291, 20302519239, 56493171410, 156652350614, 433009258768

Offset

1,1

Links

Table of n, a(n) for n=1..25.

N. J. A. Sloane, Transforms

Formula

G.f.: Sum_{k>=1} prime(k)*x^k/(1 - x)^(2*k). - Ilya Gutkovskiy, Apr 21 2019

Crossrefs

Cf. A030281.

Sequence in context: A064686 A083313 A077832 * A291015 A273345 A042575

Adjacent sequences: A030279 A030280 A030281 * A030283 A030284 A030285

Keyword

nonn,nice

Author

Christian G. Bower

Status

approved