A087150 - OEIS

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A087150

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

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; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..40.`
	FORMULA	`A087151(n)^2 = sum(k=1, n, a(k)*a(n-k+1)).`
	CROSSREFS	`Cf. A087151.` `Sequence in context: A353699 A202963 A130315 * A323724 A214307 A087134` `Adjacent sequences: A087147 A087148 A087149 * A087151 A087152 A087153`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna, Aug 19 2003`
	STATUS	`approved`

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Last modified November 28 05:56 EST 2022. Contains 358407 sequences. (Running on oeis4.)