A144934 - OEIS

A144934

Integers n such that n^2 + k is a Mersenne number 2^m - 1 for some k such that n < k < 2 * n and m odd.

2, 5, 22, 90, 5792, 46340, 92681, 185363, 370727, 2965820, 5931641, 47453132, 94906265, 759250124, 1518500249, 3037000499, 6074000999, 12148001999, 24296003999, 48592007999, 388736063996, 777472127993, 1554944255987, 6219777023950

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OFFSET

1,1

COMMENTS

Subset of A017910.

The corresponding Mersenne number exponents are given by A144933.

LINKS

Table of n, a(n) for n=1..24.

CROSSREFS

Cf. A000225, A017910, A144931, A144932, A144933

Sequence in context: A339646 A215100 A307155 * A346628 A371609 A030222

Adjacent sequences: A144931 A144932 A144933 * A144935 A144936 A144937

KEYWORD

nonn

AUTHOR

Reikku Kulon, Sep 25 2008

EXTENSIONS

2, 5 prepended by Max Alekseyev, Feb 17 2011

STATUS

approved