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A105745 For n>2, a(n) > 0 is such that a(n-1)^2+4*a(n-2)*a(n) is a minimal square, a(1)=1,a(2)=12. 1
1, 12, 13, 4, 9, 9, 4, 5, 6, 8, 8, 6, 2, 4, 6, 4, 2, 2, 4, 6, 4, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..22.

CROSSREFS

Cf. A105734 - A105746.

Sequence in context: A122253 A156456 A077180 * A020511 A008939 A284372

Adjacent sequences:  A105742 A105743 A105744 * A105746 A105747 A105748

KEYWORD

nonn

AUTHOR

Zak Seidov, Apr 19 2005

STATUS

approved

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Last modified December 15 14:37 EST 2019. Contains 329999 sequences. (Running on oeis4.)