Number of (n+1) X (3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,1 1,0 or -1,-2.
A264280
Number of (n+1) X (3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,1 1,0 or -1,-2.
Terms
- a(0) =8a(1) =32a(2) =132a(3) =556a(4) =2324a(5) =9724a(6) =40692a(7) =170268a(8) =712468a(9) =2981244a(10) =12474676a(11) =52198876a(12) =218420308a(13) =913955132a(14) =3824342132a(15) =16002528156a(16) =66960773524a(17) =280189801724
External references
- oeis: A264280