Array read by antidiagonals: A(n,k) is the number of permutations of n copies of 1..k with values introduced in order and without cyclically adjacent elements equal.
A369923
Array read by antidiagonals: A(n,k) is the number of permutations of n copies of 1..k with values introduced in order and without cyclically adjacent elements equal.
Terms
- a(0) =0a(1) =1a(2) =0a(3) =1a(4) =1a(5) =0a(6) =1a(7) =4a(8) =1a(9) =0a(10) =1a(11) =31a(12) =22a(13) =1a(14) =0a(15) =1a(16) =293a(17) =1415a(18) =134a(19) =1a(20) =0a(21) =1a(22) =3326a(23) =140343a(24) =75843a(25) =866a(26) =1a(27) =0a(28) =1a(29) =44189
External references
- oeis: A369923