id:A047866 - OEIS Search Results

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a(n) = ceiling( n(n+1)(n+2)/8 ).

+0
4

0, 1, 3, 8, 15, 27, 42, 63, 90, 124, 165, 215, 273, 342, 420, 510, 612, 727, 855, 998, 1155, 1329, 1518, 1725, 1950, 2194, 2457, 2741, 3045, 3372, 3720, 4092, 4488, 4909, 5355, 5828, 6327, 6855, 7410, 7995, 8610, 9256, 9933, 10643, 11385 (list; graph; listen)

	OFFSET	`0,3`
	CROSSREFS	`A lower bound to Honaker's triangle problem A047837.` `Sequence in context: A071148 A048598 A049717 this_sequence A080183 A109900 A034828` `Adjacent sequences: A047863 A047864 A047865 this_sequence A047867 A047868 A047869`
	KEYWORD	`easy,nonn`
	AUTHOR	`Mike Keith (domnei(AT)aol.com)`

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

AT&T Labs Research