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Search: id:A049989
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A049989 a(n)=number of arithmetic progressions of positive integers, nondecreasing with sum <= n. +0
1
1, 3, 6, 10, 14, 21, 26, 33, 42, 51, 58, 72, 80, 91, 107, 120, 130, 150, 161, 178, 199, 215, 228, 255, 272, 290, 316, 338, 354, 389, 406, 429, 460, 483, 508, 549, 569, 594, 630, 663, 685, 731, 754, 785, 833, 863, 888, 940, 969 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A079552 A140949 A025206 this_sequence A104619 A105333 A126234

Adjacent sequences: A049986 A049987 A049988 this_sequence A049990 A049991 A049992

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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