A156038 Odd numbers k with the property that (2^k + k^2) == 0 (mod (k+2)).

1, 32377, 484177, 3094247, 10908137, 15612137, 16750127, 17363927, 24827519, 34030327, 184923407, 219087767, 240654017, 430450337, 814220815, 989880257, 1040713247, 1257956527, 1839451007, 2255176457, 2314599527, 3034111727, 3254592497, 3534277217, 3569817127

Offset

1,2

Comments

Odd terms in A114977.

Links

Alois P. Heinz, Table of n, a(n) for n = 1..75 [using data from A114977]

Prog

(PARI) isok(n) = (n%2) && ((2^n+n^2)% (n+2) == 0); \\ Michel Marcus, Oct 19 2013
(PARI) is(n)=Mod(2, n+2)^n==-4 && n%2 \\ Charles R Greathouse IV, Oct 19 2013

Crossrefs

Cf. A114977.

Sequence in context: A145871 A137283 A251875 * A156048 A234224 A190471

Adjacent sequences: A156035 A156036 A156037 * A156039 A156040 A156041

Keyword

nonn

Author

Zak Seidov, Oct 30 2009

Status

approved