0,2

The Hankel transform of this sequence is 56^C(n+1,2) .

a(n) = Sum_{k, 0<=k<=n}A086810(n,k)*7^k .

Sequence in context: A139742 A120049 A067420 this_sequence A132867 A145666 A096131

Adjacent sequences: A131866 A131867 A131868 this_sequence A131870 A131871 A131872

nonn

Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Oct 29 2007