id:A087149 - OEIS Search Results

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Least positive multiples of index n that can result from the self-convolution of a monotonically increasing sequence (A087148).

+0
2

1, 2, 4, 7, 12, 19, 28, 39, 52, 67, 83, 101, 122, 147, 176, 210, 250, 295, 343, 395, 452, 515, 584, 661, 749, 845, 951, 1065, 1193, 1334, 1492, 1667, 1861, 2075, 2308, 2560, 2833, 3132, 3453, 3800, 4172, 4579, 5011, 5477, 5975, 6513, 7080, 7683, 8325, 9008 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`na(n) = sum(k=1, n, A087148(k)A087148(n-k+1)), n>=1.`
	CROSSREFS	`Cf. A087148.` `Sequence in context: A035296 A105807 A066699 this_sequence A090853 A103231 A002622` `Adjacent sequences: A087146 A087147 A087148 this_sequence A087150 A087151 A087152`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Aug 19 2003`

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

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