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A031531 Numbers n such that continued fraction for sqrt(n) has even period and central term 33. 0
1091, 1103, 1107, 1123, 1127, 1151, 1163, 1171, 1179, 1187, 1203, 1207, 1223, 4360, 4384, 4448, 4456, 4480, 4520, 4552, 4576, 4608, 4640, 4736, 4768, 4800, 4864, 4896, 9807, 9939, 9951, 10011, 10095, 10155, 10167, 10239, 10299, 10311, 10383, 10515 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

CROSSREFS

Sequence in context: A169977 A031744 A031654 * A161118 A031711 A253216

Adjacent sequences:  A031528 A031529 A031530 * A031532 A031533 A031534

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified February 28 01:38 EST 2020. Contains 332319 sequences. (Running on oeis4.)