**Numbers n such that 2*n^2 - 1 is a square.**

*1, 5, 29, 169, 985, 5741, 33461, 195025, 1136689, 6625109, 38613965, 225058681*

*3 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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