T(n,k) = Number of n X n 0..k arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.
A209684
T(n,k) = Number of n X n 0..k arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.
Terms
- a(0) =1a(1) =1a(2) =8a(3) =1a(4) =14a(5) =96a(6) =1a(7) =15a(8) =608a(9) =4608a(10) =1a(11) =15a(12) =1243a(13) =246038a(14) =331776a(15) =1a(16) =15a(17) =1508a(18) =2143147a(19) =166075313a(20) =95551488a(21) =1a(22) =15a(23) =1549a(24) =6716352a(25) =6713848491a(27) =41278242816a(28) =1a(29) =15a(30) =1551
External references
- oeis: A209684