id:A039824 - OEIS Search Results

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Number of different coefficient values in expansion of Product (1+q^1+q^3...+q^(2i-1)), i=1 to n.

+0
2

1, 2, 4, 11, 20, 31, 46, 61, 78, 97, 118, 141, 166, 193, 222, 253, 286, 321, 358, 397, 438, 481, 526, 573, 622, 673, 726, 781, 838, 897, 958, 1021, 1086, 1153, 1222, 1293, 1366, 1441, 1518, 1597, 1678, 1761, 1846, 1933, 2022, 2113, 2206, 2301, 2398, 2497 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Conjecture: for n>6, a(n) = n^2 - 3. - R. Stephan, Mar 07 2004`
	CROSSREFS	`Cf. A028872.` `Sequence in context: A076518 A139785 A000638 this_sequence A076636 A011954 A026275` `Adjacent sequences: A039821 A039822 A039823 this_sequence A039825 A039826 A039827`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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