Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change -2,-2 -1,0 0,1 or 1,0.

A264529

Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change -2,-2 -1,0 0,1 or 1,0.

Terms

    a(0) =1a(1) =2a(2) =13a(3) =40a(4) =229a(5) =696a(6) =3273a(7) =12832a(8) =52897a(9) =209890a(10) =848673a(11) =3410748a(12) =13734005a(13) =55435856a(14) =222621989a(15) =897990076a(16) =3610748165a(17) =14552830034a(18) =58558270001a(19) =235878435500a(20) =949470694545

External references