a(n) is the least prime p for which the continued fraction expansion of sqrt(p) has exactly n consecutive 1's starting at position 2.

A307453

a(n) is the least prime p for which the continued fraction expansion of sqrt(p) has exactly n consecutive 1's starting at position 2.

Terms

    a(0) =2a(1) =3a(2) =31a(3) =7a(4) =13a(5) =3797a(6) =5273a(7) =4987a(8) =90371a(9) =79873a(10) =2081a(11) =111301a(12) =1258027a(13) =5325101a(14) =12564317a(15) =9477889a(16) =47370431a(17) =709669249a(18) =1529640443a(19) =2196104969a(20) =392143681a(21) =8216809361a(22) =30739072339a(23) =200758317433a(24) =370949963971a(25) =161356959383

External references