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A070211 Concave ordered partitions of n. +0
1
1, 1, 2, 4, 6, 9, 14, 18, 24, 34, 42, 52, 68, 82, 101, 126, 147, 175, 213, 246, 289, 344, 392, 453, 530, 598, 687, 791, 885, 1007, 1151, 1276, 1438, 1629, 1806, 2018, 2262, 2490, 2775, 3091, 3387, 3754, 4165, 4542, 5011, 5527, 6012, 6600, 7245, 7864, 8614 (list; graph; listen)
OFFSET

0,3

EXAMPLE

Out of the 8 ordered partitions of 4, only 2+1+1 and 1+1+2 are not concave, so a(4)=6.

CROSSREFS

Cf. A069916.

Sequence in context: A143586 A081225 A164140 this_sequence A113753 A024457 A117842

Adjacent sequences: A070208 A070209 A070210 this_sequence A070212 A070213 A070214

KEYWORD

nice,nonn

AUTHOR

Pontus von Bromssen (pontus.von.bromssen(AT)gmail.com), May 07 2002

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Last modified December 19 21:04 EST 2009. Contains 171054 sequences.


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