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A049267 Smallest nonnegative value taken on by nx^2 - 8y^2 for an infinite number of integer pairs (x, y). 0
1, 0, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 4, 8, 12, 14, 7, 16, 8, 2, 4, 20, 8, 22, 23, 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 10, 4, 4, 13, 14, 15, 16, 17, 0, 4, 8, 5, 16, 20, 24, 1, 2, 3, 28, 8, 6, 7, 32, 8, 34, 4, 36, 37, 38, 39, 0, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 12, 8, 6, 15, 16, 1, 10, 19 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..91.

CROSSREFS

Sequence in context: A320727 A036288 A159077 * A111608 A126800 A245689

Adjacent sequences:  A049264 A049265 A049266 * A049268 A049269 A049270

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 15 12:31 EDT 2019. Contains 328026 sequences. (Running on oeis4.)