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A107040 Indices of squarefree Pell numbers. 1
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 (list; graph; refs; listen; history; text; internal format)
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

Table of n, a(n) for n=1..59.

FORMULA

{i: A000129(i) in A005117}. - R. J. Mathar, Jan 04 2017

CROSSREFS

Cf. A000129, A037918, A107037.

Sequence in context: A069861 A047449 A162923 * A045989 A129832 A166687

Adjacent sequences:  A107037 A107038 A107039 * A107041 A107042 A107043

KEYWORD

nonn

AUTHOR

Paul Barry, May 09 2005

STATUS

approved

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Last modified November 15 13:20 EST 2019. Contains 329149 sequences. (Running on oeis4.)