A049279 Smallest nonnegative value taken on by nx^2 - 20y^2 for an infinite number of integer pairs (x, y).

1, 2, 3, 4, 0, 4, 7, 8, 1, 10, 11, 12, 5, 4, 15, 16, 5, 18, 19, 0, 1, 2, 3, 4, 5, 6, 7, 8, 5, 10, 11, 12, 13, 14, 15, 4, 5, 2, 19, 20, 9, 22, 23, 24, 0, 4, 8, 12, 1, 20, 24, 20, 5, 4, 35, 4, 12, 20, 11, 40, 41, 12, 28, 44, 5, 30, 23, 12, 1, 50, 31, 52, 5, 6, 55, 56, 28, 58, 59, 0, 1, 2, 3

Offset

1,2

Links

Table of n, a(n) for n=1..83.

Crossrefs

Sequence in context: A286247 A203571 A199511 * A126013 A119974 A195828

Adjacent sequences: A049276 A049277 A049278 * A049280 A049281 A049282

Keyword

nonn

Author

David W. Wilson

Status

approved