Shifts left under the "BIK" (reversible, indistinct, unlabeled) transform with a(1) = 2.

A032130

Shifts left under the "BIK" (reversible, indistinct, unlabeled) transform with a(1) = 2.

Terms

    a(0) =2a(1) =2a(2) =5a(3) =15a(4) =52a(5) =193a(6) =765a(7) =3143a(8) =13323a(9) =57670a(10) =254040a(11) =1134249a(12) =5122124a(13) =23349966a(14) =107310784a(15) =496633774a(16) =2312539465a(17) =10826481544a(18) =50929829953a(19) =240616214596

External references