0,2

Binomial transform of A002110.

a(3) = 55 = (1, 3, 3, 1) dot (1, 2, 6, 30) = (1 + 6 + 18 + 30); where A002110 = (1, 2, 6, 30, 210, 2310,...).

Cf. A002110.

Sequence in context: A020061 A125696 A001776 this_sequence A007841 A036760 A000985

Adjacent sequences: A136101 A136102 A136103 this_sequence A136105 A136106 A136107

nonn

Gary W. Adamson (qntmpkt(AT)yahoo.com), Dec 14 2007