0,2

Hankel transform is (-1)^n.

a(0)=1, a(n+1)=3*a(n)+A059738(n).

Sequence in context: A071723 A001559 A002311 this_sequence A094833 A039717 A026013

Adjacent sequences: A126929 A126930 A126931 this_sequence A126933 A126934 A126935

nonn

Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Mar 17 2007