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

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