A013653 Period of continued fraction for sqrt(n) contains exactly two 1's and they are not consecutive.

14, 19, 22, 23, 33, 34, 45, 47, 52, 54, 59, 60, 62, 69, 70, 71, 77, 78, 79, 95, 96, 98, 107, 114, 117, 118, 119, 127, 138, 140, 141, 142, 149, 153, 154, 164, 165, 167, 178, 187, 188, 189, 192, 194, 202, 205, 206, 216, 218, 219, 220, 221, 222, 223, 234, 238, 239, 248, 250

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..59.

Crossrefs

Sequence in context: A248134 A013649 A013657 * A360169 A072124 A026287

Adjacent sequences: A013650 A013651 A013652 * A013654 A013655 A013656

Keyword

nonn

Author

Clark Kimberling

Extensions

More terms from David W. Wilson

Status

approved