id:A099520 - OEIS Search Results

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a(1)=1; for n>1, a(n)=smallest integer m>0 not yet appearing in sequence such that m+a(n-1) is a multiple of n-1.

+0
5

1, 2, 4, 5, 3, 7, 11, 10, 6, 12, 8, 14, 22, 17, 25, 20, 28, 23, 13, 44, 16, 26, 18, 51, 21, 29, 49, 32, 24, 34, 56, 37, 27, 39, 63, 42, 30, 81, 33, 45, 35, 47, 79, 50, 38, 52, 40, 54, 90, 57, 43, 59, 97, 9, 99, 66, 46, 68, 48, 70, 110, 73, 113, 76, 116, 144, 120, 148, 124, 83 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(1)=1. a(2)=2 because a(2)+a(1)=2+1=3 which is a multiple of 1. Could not use` `a(2)=1 since 1 has already been used. a(3)=4 so that a(3)+a(2)=4+2=6 which is` `a multiple of 2, etc.`
	CROSSREFS	`Cf. A099506 for similar sequence with a(n)+a(n-1)=multiple of n.` `Adjacent sequences: A099517 A099518 A099519 this_sequence A099521 A099522 A099523` `Sequence in context: A065183 A119791 A026257 this_sequence A071770 A105529 A120237`
	KEYWORD	`easy,nonn`
	AUTHOR	`Mark Hudson (mrmarkhudson(AT)hotmail.com), Oct 20 2004`

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Last modified October 7 08:31 EDT 2008. Contains 144667 sequences.

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