id:A069470 - OEIS Search Results

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Sum_k floor[n/(k*(k+1)/2)].

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0, 1, 2, 4, 5, 6, 9, 10, 11, 13, 15, 16, 19, 20, 21, 24, 25, 26, 29, 30, 32, 35, 36, 37, 40, 41, 42, 44, 46, 47, 52, 53, 54, 56, 57, 58, 62, 63, 64, 66, 68, 69, 73, 74, 75, 79, 80, 81, 84, 85, 87, 89, 90, 91, 94, 96, 98, 100, 101, 102, 107, 108, 109, 112, 113, 114, 118 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n) =a(n-1)+A007862(n)`
	EXAMPLE	`a(11) =floor[11/1]+floor[11/3]+floor[11/6]+floor[11/10]+floor[11/15]+... =11+3+1+1+0+... =16`
	CROSSREFS	`Cf. A000217, A006218, A013936-A013939.` `Adjacent sequences: A069467 A069468 A069469 this_sequence A069471 A069472 A069473` `Sequence in context: A050015 A063656 A076354 this_sequence A047435 A132791 A125297`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Mar 25 2002`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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