Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,2 1,0 or -1,-2.
A264359
Number of (n+1)X(3+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,2 1,0 or -1,-2.
Terms
- a(0) =9a(1) =36a(2) =169a(3) =784a(4) =3600a(5) =16641a(6) =76729a(7) =354025a(8) =1633284a(9) =7535025a(10) =34762816a(11) =160376896a(12) =739894401a(13) =3413480625a(14) =15747991081a(15) =72652889764a(16) =335181944601
External references
- oeis: A264359