Fourth right hand column (n-m=3) of the A156920 triangle.

A156923

Fourth right hand column (n-m=3) of the A156920 triangle.

Terms

    a(0) =1a(1) =37a(2) =646a(3) =8030a(4) =82610a(5) =756218a(6) =6411720a(7) =51586344a(8) =400011435a(9) =3020658295a(10) =22373863774a(11) =163379472214

External references