A158552 a(n) = A144433(n) - A106833(n).

5, -1, 7, -3, 9, -5, 11, -7, 13, -9, 15, -11, 17, -13, 19, -15, 21, -17, 23, -19, 25, -21, 27, -23, 29, -25, 31, -27, 33, -29, 35, -31, 37, -33, 39, -35, 41, -37, 43, -39, 45, -41, 47, -43, 49, -45, 51, -47, 53, -49, 55, -51, 57, -53, 59, -55, 61, -57, 63, -59, 65, -61, 67

Offset

1,1

Links

Table of n, a(n) for n=1..63.

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

Formula

a(n) = A118402(n+3).

From R. J. Mathar, Apr 08 2009: (Start)

G.f.: x*(5+4*x+x^2)/((1-x)*(1+x)^2).

a(n) = -a(n-1) + a(n-2) + a(n-3).

(End)

Crossrefs

Cf. A118402, A106833, A144433.

Sequence in context: A011508 A365318 A195429 * A322050 A370516 A021663

Adjacent sequences: A158549 A158550 A158551 * A158553 A158554 A158555

Keyword

sign

Author

Paul Curtz, Mar 21 2009

Extensions

Edited and extended by R. J. Mathar, Apr 08 2009

Status

approved