1,2

G.f.: (1-4x-x^2+2x^3-x^4)/(1-6x+8x^2-3x^3).

Cf. A087162.

Sequence in context: A000230 A133429 A087770 this_sequence A077213 A112601 A098544

Adjacent sequences: A087161 A087162 A087163 this_sequence A087165 A087166 A087167

nonn

Paul D. Hanna (pauldhanna(AT)juno.com), Aug 22 2003