id:A087150 - OEIS Search Results

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Monotonically increasing sequence of least positive integers, a(1)=1, such that the self-convolution produces all squares.

+0
2

1, 2, 6, 20, 40, 42, 54, 90, 168, 236, 406, 712, 1094, 1602, 2240, 2970, 3690, 4874, 5008, 5710, 8338, 9714, 10496, 11314, 12812, 19924, 27678, 37748, 49142, 55996, 71438, 92420, 104866, 110158, 128642, 143030, 151098, 158264, 208234, 213902 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`A087151(n)^2 = sum(k=1, n, a(k)*a(n-k+1)).`
	CROSSREFS	`Cf. A087151.` `Sequence in context: A035142 A064701 A130315 this_sequence A087134 A036689 A139115` `Adjacent sequences: A087147 A087148 A087149 this_sequence A087151 A087152 A087153`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Aug 19 2003`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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