A054843 - OEIS

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A054843

Number of sequences of consecutive nonnegative integers (including sequences of length 1) that sum to n.

2, 1, 3, 1, 2, 3, 2, 1, 3, 3, 2, 2, 2, 2, 5, 1, 2, 3, 2, 2, 5, 2, 2, 2, 3, 2, 4, 3, 2, 4, 2, 1, 4, 2, 4, 4, 2, 2, 4, 2, 2, 4, 2, 2, 7, 2, 2, 2, 3, 3, 4, 2, 2, 4, 5, 2, 4, 2, 2, 4, 2, 2, 6, 1, 4, 5, 2, 2, 4, 4, 2, 3, 2, 2, 6, 2, 4, 5, 2, 2, 5, 2, 2, 4, 4, 2, 4, 2, 2, 6, 5, 2, 4, 2, 4, 2, 2, 3, 6, 3, 2, 4, 2, 2, 9 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`a(n) = A001227(n) + A010054(n). G.f.: Sum_{k>0} x^(k*(k-1)/2)/(1-x^k). - Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 10 2004`
	EXAMPLE	`a(1) = 2 because 1 = 0+1 or 1; a(15) = 5 because 15 = 0+1+2+3+4+5 or 1+2+3+4+5 or 4+5+6 or 7+8 or 15.`
	CROSSREFS	`Cf. A001227, A054844.` `Sequence in context: A105497 A132662 A132589 * A038566 A020652 A096107` `Adjacent sequences: A054840 A054841 A054842 * A054844 A054845 A054846`
	KEYWORD	`easy,nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Apr 13 2000`

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Last modified February 14 17:10 EST 2012. Contains 205644 sequences.