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A174223 Add to 2n+1 the next three primes > 2n+1. 3
11, 26, 36, 48, 50, 60, 72, 74, 88, 102, 104, 120, 122, 124, 138, 152, 154, 156, 168, 170, 184, 202, 204, 220, 222, 224, 240, 242, 244, 258, 272, 274, 276, 290, 292, 306, 324, 326, 328, 348, 350, 370, 372, 374, 390, 392, 394, 396, 408, 410, 420, 432, 434, 456, 480, 482, 508, 510, 512, 514, 516, 518, 520, 534, 536, 556, 558, 560, 576, 596, 598, 600, 602, 604 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Bisection of A174221.

LINKS

Michael De Vlieger, Table of n, a(n) for n = 0..10000

MATHEMATICA

Array[Total@ Prepend[NextPrime[#, {1, 2, 3}], #] &[2 # + 1] &, 74, 0] (* Michael De Vlieger, Oct 25 2017 *)

PROG

(PARI) A174223(n)=sum(c=1, 3, n=nextprime(n+1), n=2*n+1) \\ M. F. Hasler, Oct 25 2017

CROSSREFS

Cf. A174221, A193230.

Sequence in context: A260903 A316315 A251268 * A247466 A329809 A190684

Adjacent sequences:  A174220 A174221 A174222 * A174224 A174225 A174226

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 26 2010

STATUS

approved

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Last modified September 28 12:34 EDT 2020. Contains 337393 sequences. (Running on oeis4.)