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A013652 Period of continued fraction for sqrt(n) contains at least three 1's. 0
7, 13, 21, 31, 32, 43, 44, 46, 57, 58, 61, 67, 73, 74, 75, 76, 86, 88, 91, 92, 93, 94, 97, 103, 106, 108, 109, 111, 112, 113, 115, 116, 124, 129, 133, 134, 135, 136, 137, 139, 151, 157, 158, 159, 160, 161, 162, 163, 166, 172, 179, 181, 183, 184, 185, 186, 190, 191, 193, 199 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

Kenneth H. Rosen, Elementary Number Theory and Its Applications, Addison-Wesley, 1984, page 426 (but beware of errors!).

LINKS

Table of n, a(n) for n=1..60.

CROSSREFS

Sequence in context: A135275 A304005 A304947 * A099988 A076947 A138077

Adjacent sequences:  A013649 A013650 A013651 * A013653 A013654 A013655

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from David W. Wilson

STATUS

approved

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Last modified August 3 08:53 EDT 2020. Contains 336197 sequences. (Running on oeis4.)