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A186293 (A007519(n)-1)/2. 2
8, 20, 36, 44, 48, 56, 68, 96, 116, 120, 128, 140, 156, 168, 176, 200, 204, 216, 224, 228, 260, 284, 288, 296, 300, 308, 320, 336, 380, 384, 404, 428, 440, 464, 468, 476, 488, 504, 516, 524, 548, 564, 576, 596, 600, 608 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..46.

FORMULA

a(n) = A186294(n)-1.

a(n) = 4*A005123(n).

MATHEMATICA

(Select[1 + 8 Range@ 155, PrimeQ] -1)/2 (* Robert G. Wilson v *)

CROSSREFS

Cf. A186305.

Sequence in context: A246309 A038522 A267435 * A158865 A139570 A265207

Adjacent sequences:  A186290 A186291 A186292 * A186294 A186295 A186296

KEYWORD

nonn,easy

AUTHOR

Marco Matosic, Feb 17 2011

STATUS

approved

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Last modified June 24 21:09 EDT 2021. Contains 345425 sequences. (Running on oeis4.)