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A100466 Semiprimes of special form: sum of an integer k and the k-th semiprime. +0
5
14, 21, 34, 46, 62, 69, 74, 77, 93, 115, 122, 129, 141, 158, 161, 177, 187, 194, 206, 215, 221, 289, 291, 302, 326, 329, 334, 346, 361, 382, 391, 393, 398, 403, 451, 471, 481, 502, 535, 543, 581, 583, 629, 635, 655, 674, 698, 706, 713, 723, 734, 802, 813 (list; graph; listen)
OFFSET

1,1

COMMENT

This is the semiprime analogue of A061068.

LINKS

Eric Weisstein, World of Mathematics, Semiprime.

FORMULA

a(n) = A100915(n) + A100916(n) = A100915(n) + A001358(A100915(n)).

EXAMPLE

a(3) = 34 because 34 is the third semiprime appearing in A100493.

CROSSREFS

Cf. A001358, A061068, A100493, A100467, A100915, A100916.

Adjacent sequences: A100463 A100464 A100465 this_sequence A100467 A100468 A100469

Sequence in context: A120141 A121495 A084995 this_sequence A100467 A094393 A128705

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post (jvospost2(AT)yahoo.com), Nov 20 2004

EXTENSIONS

Edited, corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 26 2004

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.


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