id:A039822 - OEIS Search Results

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Number of different coefficient values in expansion of Product (1+q^i), i=1 to n.

+0
2

1, 1, 2, 2, 3, 5, 8, 14, 18, 24, 30, 37, 43, 50, 58, 66, 74, 83, 93, 103, 113, 124, 136, 148, 160, 173, 187, 201, 215, 230, 246, 262, 278, 295, 313, 331, 349, 368, 388, 408, 428, 449, 471, 493, 515, 538, 562, 586, 610, 635 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`It appears that for n>11, a(n) = floor((n^2+3n-6)/4). - Ralf Stephan, Jun 10 2005`
	CROSSREFS	`Sequence in context: A152948 A018136 A022863 this_sequence A025591 A028409 A080553` `Adjacent sequences: A039819 A039820 A039821 this_sequence A039823 A039824 A039825`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

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