id:A061883 - OEIS Search Results

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Largest triangular number less than or equal to sum of previous terms with a(0)=1.

+0
3

1, 1, 1, 3, 6, 10, 21, 36, 78, 153, 300, 595, 1176, 2346, 4656, 9316, 18528, 37128, 74305, 148240, 296835, 593505, 1186570, 2372931, 4744740, 9489546, 18975880, 37953828, 75909681, 151806600, 303626403, 607243825, 1214480970, 2428940451 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`a(5)=10 since 1+1+1+3+6=12 and 10 is the largest triangular number less than or equal to this.`
	FORMULA	`a(n) = A060985(n+1)-A060985(n) = A057944(A060985(n)) = A000217(A003056(A060985(n)))`
	CROSSREFS	`Sequence in context: A068882 A076713 A136569 this_sequence A027671 A068149 A068709` `Adjacent sequences: A061880 A061881 A061882 this_sequence A061884 A061885 A061886`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), May 12 2001`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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