A173257 Pell sequence entry points for primes == 1 (mod 4).

3, 7, 8, 5, 19, 10, 27, 31, 36, 44, 48, 51, 55, 28, 17, 75, 79, 87, 91, 96, 9, 23, 116, 40, 64, 15, 139, 140, 49, 78, 159, 28, 175, 22, 187, 39, 199, 200, 102, 211, 216, 224, 114, 231, 255, 65, 271, 279, 71, 16

Offset

1,1

Links

R. J. Mathar, Table of n, a(n) for n = 1..1000

Neville Robbins, On Pell numbers of the form p*X^2, where p is prime, Fib Quart. 22 (4) (1984) 340, Table 2.

Formula

a(n) = A214028(A002144(n)).

Maple

A173257 := proc(n)
        A214028(A002144(n)) ;
end proc:
seq(A173257(n), n=1..50) ;

Crossrefs

Sequence in context: A264826 A335893 A199712 * A103560 A198562 A244334

Adjacent sequences: A173254 A173255 A173256 * A173258 A173259 A173260

Keyword

nonn,easy

Author

R. J. Mathar, Jul 07 2012

Status

approved