Triangle read by rows: T(n,k) is the number of ways to place k non-attacking kings in each row of an n X n board, 0 <= k <= floor((n+1)/4) + [n=1].
A390419
Triangle read by rows: T(n,k) is the number of ways to place k non-attacking kings in each row of an n X n board, 0 <= k <= floor((n+1)/4) + [n=1].
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =16a(7) =1a(8) =184a(9) =1a(10) =2642a(11) =1a(12) =45514a(13) =6a(14) =1a(15) =911642a(16) =1550a(17) =1a(18) =20793594a(19) =988556a(20) =1a(21) =531713286a(22) =587256692a(23) =1a(24) =15059408170a(25) =380941109984a(26) =20a(27) =1a(28) =467843350146a(30) =263928
External references
- oeis: A390419