A110343 a(1) = 1, a(n) = sum of n successive primes beginning with n if n is prime otherwise a(n) = sum of n successive composite numbers beginning with n.

1, 5, 15, 27, 53, 59, 119, 102, 135, 172, 311, 240, 473, 318, 371, 427, 833, 528, 1103, 641, 715, 793, 1643, 928, 1015, 1105, 1201, 1301, 2647, 1472, 3137, 1653, 1770, 1890, 2014, 2142, 4501, 2361, 2498, 2640, 5633, 2879, 6363, 3126, 3281, 3442, 7701, 3715

Offset

1,2

Links

Table of n, a(n) for n=1..48.

Crossrefs

Sequence in context: A100437 A339567 A067533 * A146060 A076843 A285406

Adjacent sequences: A110340 A110341 A110342 * A110344 A110345 A110346

Keyword

nonn

Author

Amarnath Murthy, Jul 20 2005

Extensions

More terms from Franklin T. Adams-Watters, Apr 26 2006

Status

approved