id:A075643 - OEIS Search Results

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Group the natural numbers so that the n-th group contains n numbers one each of a multiple of numbers from 1 to n so that the group sum is a multiple of (n+1): (2), (1, 8), (3, 4, 9), (5, 6, 12, 32), (7, 10, 15, 16, 30), (11, 14, 18, 20, 25, 24), ... Sequence gives initial terms of groups.

+0
6

2, 1, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Is this the same sequence as A076074? - Andrew Plewe (aplewe(AT)sbcglobal.net), Apr 30 2007`
	CROSSREFS	`Cf. A075644, A075645, A075646, A075647 (gives the list of groups).` `Sequence in context: A058202 A127201 A006769 this_sequence A076074 A135017 A070168` `Adjacent sequences: A075640 A075641 A075642 this_sequence A075644 A075645 A075646`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 30 2002`
	EXTENSIONS	`More terms from David Wasserman (dwasserm(AT)earthlink.net), Jan 22 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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