id:A025545 - OEIS Search Results

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a(n) = (1/4 + 1/6 + ... + 1/c(n))*LCM{4, 6, ..., c(n)}, where c(n) = n-th composite number.

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1, 5, 13, 47, 271, 301, 2287, 2455, 5225, 5505, 5757, 5997, 68487, 70797, 365073, 4884549, 15054047, 15440147, 15800507, 32276689, 32931889, 570652913, 581154833, 591365033, 11419719227, 11598790427, 11773384847, 11939665247, 12098387447, 12253582487 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A099972 A060050 A120790 this_sequence A082132 A138277 A084601` `Adjacent sequences: A025542 A025543 A025544 this_sequence A025546 A025547 A025548`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.

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