1,1

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.

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

A173257 := proc(n)

A214028(A002144(n)) ;

end proc:

seq(A173257(n), n=1..50) ;

Sequence in context: A264826 A335893 A199712 * A103560 A198562 A244334

Adjacent sequences: A173254 A173255 A173256 * A173258 A173259 A173260

nonn,easy

R. J. Mathar, Jul 07 2012

approved