Shifts left 2 places under "BIJ" (reversible, indistinct, labeled) transform.

A032118

Shifts left 2 places under "BIJ" (reversible, indistinct, labeled) transform.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =39a(6) =282a(7) =2476a(8) =25468a(9) =300104a(10) =3984742a(11) =58857048a(12) =957156654a(13) =16992957454a(14) =327018332848

External references