id:A065233 - OEIS Search Results

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Fill a triangular array by rows by writing numbers 1 up to b(0), 1 up to b(1), etc., where b(n) are the nonagonal numbers. The first elements of the rows form a(n).

+0
3

1, 1, 3, 6, 1, 6, 12, 19, 3, 12, 22, 33, 45, 12, 26, 41, 57, 74, 17, 36, 56, 77, 99, 11, 35, 60, 86, 113, 141, 16, 46, 77, 109, 142, 176, 7, 43, 80, 118, 157, 197, 238, 19, 62, 106, 151, 197, 244, 292, 16, 66, 117, 169, 222, 276, 331, 387, 48, 106, 165, 225, 286, 348 (list; graph; listen)

	OFFSET	`0,3`
	CROSSREFS	`Cf. A064766, A064865, A065221-A065232, A065234.` `Sequence in context: A055263 A004157 A091068 this_sequence A072452 A155830 A096602` `Adjacent sequences: A065230 A065231 A065232 this_sequence A065234 A065235 A065236`
	KEYWORD	`easy,nonn`
	AUTHOR	`Floor van Lamoen (fvlamoen(AT)hotmail.com), Oct 22 2001`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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