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

A264535

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

Terms

    a(0) =0a(1) =4a(2) =2a(3) =1a(4) =16a(5) =16a(6) =16a(7) =68a(8) =97a(9) =128a(10) =328a(11) =548a(12) =838a(13) =1729a(14) =3056a(15) =5056a(16) =9536a(17) =17096a(18) =29441a(19) =53584a(20) =96144a(21) =168804a(22) =303114a(23) =542785a(24) =961504a(25) =1718224a(26) =3071248a(27) =5461836a(28) =9744865a(29) =17398576

External references