0,2

G.f.: (1+2*x-3*x^2)/(1-9*x^2+4*x^3)

Sequence in context: A151386 A151399 A152806 this_sequence A133155 A011455 A055691

Adjacent sequences: A122106 A122107 A122108 this_sequence A122110 A122111 A122112

sign

Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 18 2006