A004279 1, 3, 5 and the positive even numbers.

1, 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104

Offset

0,2

Links

Table of n, a(n) for n=0..54.

Index entries for linear recurrences with constant coefficients, signature (2,-1).

Formula

G.f.: (x^2+1)*(x^4-x^2+1)/(x-1)^2.

Mathematica

Sort[Join[Range[2, 104, 2], Range[1, 5, 2]]] (* Harvey P. Dale, Aug 28 2011 *)

Crossrefs

Cf. A004272.

Sequence in context: A273011 A032956 A004272 * A274039 A005377 A120370

Adjacent sequences: A004276 A004277 A004278 * A004280 A004281 A004282

Keyword

easy,nonn

Author

N. J. A. Sloane

Status

approved