A129987 Third differences of A129983.

1, 2, 4, 8, 17, 37, 81, 177, 386, 842, 1841, 4039, 8893, 19645, 43522, 96664, 215181, 479997, 1072741, 2401621, 5385186, 12092582, 27189309, 61204175, 137916217, 311066617, 702185890, 1586252780, 3585742513, 8110367333, 18353893785, 41554367417, 94120260194

Offset

0,2

Links

Table of n, a(n) for n=0..32.

Mathematica

Differences[CoefficientList[Series[(1-5x+9x^2-6x^3-x^4+x^5)/((-1+4x-5x^2+2x^3+x^4)(-1+2x)), {x, 0, 30}], x], 3] (* Harvey P. Dale, Jun 19 2015 *)

Crossrefs

Sequence in context: A325928 A076892 A106462 * A132275 A136671 A274114

Adjacent sequences: A129984 A129985 A129986 * A129988 A129989 A129990

Keyword

nonn

Author

Paul Curtz, Jun 14 2007

Extensions

More terms from Harvey P. Dale, Jun 19 2015

Status

approved