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.
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. J. Mathar, Jul 07 2012
STATUS
approved