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A174518 Sum of two consecutive primes and composite numbers in-between. 3
5, 12, 18, 45, 36, 75, 54, 105, 182, 90, 238, 195, 126, 225, 350, 392, 180, 448, 345, 216, 532, 405, 602, 837, 495, 306, 525, 324, 555, 1800, 645, 938, 414, 1584, 450, 1078, 1120, 825, 1190, 1232, 540, 2046, 576, 975, 594, 2665, 2821, 1125, 684, 1155, 1652 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..51.

MATHEMATICA

f[n_, x_]:=n*x+x*(x+1)/2; Table[Prime[n]+f[Prime[n], Prime[n+1]-Prime[n]-1]+Prime[n+1], {n, 5!}]

CROSSREFS

Cf. A034962, A054265

Sequence in context: A282696 A246300 A101757 * A109403 A093084 A063614

Adjacent sequences:  A174515 A174516 A174517 * A174519 A174520 A174521

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Mar 21 2010

STATUS

approved

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Last modified April 28 00:46 EDT 2017. Contains 285556 sequences.