A126423 a(n) = n^4 - n - 1.

-1, 13, 77, 251, 619, 1289, 2393, 4087, 6551, 9989, 14629, 20723, 28547, 38401, 50609, 65519, 83503, 104957, 130301, 159979, 194459, 234233, 279817, 331751, 390599, 456949, 531413, 614627, 707251, 809969, 923489, 1048543, 1185887, 1336301, 1500589, 1679579, 1874123, 2085097, 2313401, 2559959

Offset

1,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..10000

Mathematica

a = {}; Do[AppendTo[a, x^4 - x - 1], {x, 1, 100}]; a

Prog

(Magma) [n^4-n-1: n in [1..40]]; // Vincenzo Librandi, Aug 30 2011

Crossrefs

Cf. A002327, A002328, A116581, A126420, A126421, A126422.

Sequence in context: A044200 A329109 A044581 * A072474 A186103 A194713

Adjacent sequences: A126420 A126421 A126422 * A126424 A126425 A126426

Keyword

sign,easy

Author

Artur Jasinski, Dec 26 2006

Status

approved