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A120535 Semiprimes that are not the sum of 3 pentagonal numbers. +0
1
4, 9, 21, 26, 33, 38, 55, 65, 77, 111, 142, 159, 166, 183, 205, 217, 226, 265, 346, 371, 395, 417, 453, 551, 573, 597, 655, 681, 843, 905, 951, 985, 1059, 1165, 1441, 1563, 2033, 2073, 2361, 2487, 2841, 2991, 3831, 4061, 4601, 8691, 10911 (list; graph; listen)
OFFSET

1,1

COMMENT

Semiprime analogue of A117065.

CROSSREFS

A001358 intersect A003679.

Cf. A001358, A003679, A117065.

Adjacent sequences: A120532 A120533 A120534 this_sequence A120536 A120537 A120538

Sequence in context: A111587 A130045 A038805 this_sequence A033944 A038415 A002762

KEYWORD

fini,full,nonn

AUTHOR

Jonathan Vos Post (jvospost2(AT)yahoo.com), Aug 06 2006

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.


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