A031556 that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 58.

3366, 3374, 3378, 3382, 3394, 3398, 3414, 3426, 3442, 3446, 3494, 3506, 3518, 3522, 3558, 3566, 3574, 3586, 3598, 7572, 7581, 7593, 7617, 7629, 7653, 7671, 7707, 7716, 7737, 7761, 7773, 7833, 7869, 7926, 7932, 7941, 7953, 7959, 7977, 7989, 8013, 8031

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Crossrefs

Sequence in context: A221332 A163044 A069367 * A265625 A014441 A293651

Adjacent sequences: A031553 A031554 A031555 * A031557 A031558 A031559

Keyword

nonn

Author

David W. Wilson

Status

approved