Shifts one place left under 2nd-order binomial transform.

A004211

Shifts one place left under 2nd-order binomial transform.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =11a(4) =49a(5) =257a(6) =1539a(7) =10299a(8) =75905a(9) =609441a(10) =5284451a(11) =49134923a(12) =487026929a(13) =5120905441a(14) =56878092067a(15) =664920021819

External references