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A179007 Sum of 3 consecutive composite odd numbers. 1
45, 61, 73, 85, 95, 107, 119, 133, 145, 155, 163, 175, 185, 197, 209, 221, 233, 243, 253, 263, 271, 279, 287, 299, 315, 331, 343, 351, 357, 363, 369, 377, 387, 397, 409, 419, 429, 435, 445, 455, 467, 475, 485, 495, 505, 515, 523, 535, 545, 555, 561, 571, 585, 599 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

EXAMPLE

9+15+21=45, 15+21+25=61, 21+25+27=73,..

MATHEMATICA

t=Select[Range[2, 200], OddQ[#] && ! PrimeQ[#] &]; Plus @@@ Partition[t, 3, 1]

CROSSREFS

Cf. A034962, A034965, A082246

Sequence in context: A151743 A348923 A348922 * A138046 A324367 A140276

Adjacent sequences: A179004 A179005 A179006 * A179008 A179009 A179010

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Jan 07 2011

STATUS

approved

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Last modified November 29 16:39 EST 2022. Contains 358431 sequences. (Running on oeis4.)