A031647 Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 59.

21929, 43313, 70837, 71905, 72442, 106397, 150713, 200929, 252293, 255314, 257338, 258353, 318457, 320717, 384841, 387325, 394825, 467018, 469754, 549706, 551189, 558634, 561626, 653593, 750797, 840017, 843685, 845522, 847361, 849202

Offset

1,1

Links

Table of n, a(n) for n=1..30.

Crossrefs

Sequence in context: A345146 A345155 A345156 * A045109 A206126 A077751

Adjacent sequences: A031644 A031645 A031646 * A031648 A031649 A031650

Keyword

nonn

Author

David W. Wilson

Extensions

First term 3482 removed by Georg Fischer, Jun 16 2019

Status

approved