Triangle: m=5; e(n,k,n)=(k + m - 1)*e(n - 1, k, m) + (m*n - k + 1 - m)*e(n - 1, k - 1, m); t(n,k)=e(n,k,m)+e(n,n-k,m).
A156188
Triangle: m=5; e(n,k,n)=(k + m - 1)*e(n - 1, k, m) + (m*n - k + 1 - m)*e(n - 1, k - 1, m); t(n,k)=e(n,k,m)+e(n,n-k,m).
Terms
- a(0) =2a(1) =1a(2) =1a(3) =1a(4) =10a(5) =1a(6) =1a(7) =80a(8) =80a(9) =1a(10) =1a(11) =775a(12) =1520a(13) =775a(14) =1a(15) =1a(16) =10915a(17) =25945a(18) =25945a(19) =10915a(20) =1a(21) =1a(22) =213720a(23) =542910a(24) =624670a(25) =542910a(26) =213720a(27) =1a(28) =1a(29) =5245530
External references
- oeis: A156188