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A107040
Indices of squarefree Pell numbers.
2
1, 2, 3, 5, 6, 9, 10, 11, 13, 17, 18, 19, 22, 23, 25, 26, 27, 29, 31, 33, 34, 37, 38, 39, 41, 43, 46, 47, 50, 51, 53, 54, 55, 57, 58, 59, 61, 62, 65, 66, 67, 69, 71, 73, 74, 78, 79, 81, 82, 83, 85, 86, 87, 89, 93, 94, 95, 97, 99, 101, 102, 103, 106, 107, 109, 110
OFFSET
1,2
COMMENTS
The associated Pell numbers are 1, 2, 5, 29, 70, 985, 2378, 5741, 33461, 1136689, 2744210, 6625109,... - R. J. Mathar, Jan 04 2017
LINKS
FORMULA
{i: A000129(i) in A005117}. - R. J. Mathar, Jan 04 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul Barry, May 09 2005
EXTENSIONS
More terms from Amiram Eldar, Feb 25 2024
STATUS
approved