46232

Appears in sequences

• Triangular array generated by its row sums: T(n,0)=1 for n >= 1, T(n,1)=r(n-1), T(n,k)=T(n,k-1)+r(n-k) for k=2,3,...,n, n >= 2, r(h)=sum of the numbers in row h of T.at n=43A054115
• T(n,n-1), array T as in A054115.at n=7A054116
• Triangle read by rows: T(n,k) is the number of deco polyominoes of height n with k cells in the first column. (A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column).at n=42A100822
• Triangle read by rows, T(n,k) = Sum_{j=k..n} j!, 0 <= k <= n.at n=38A143122
• a(n) = a(n-1) + a(n-2) - a(n-4) starting a(0)=0, a(1)=1, a(2)=a(3)=3.at n=35A168637
• Array read by antidiagonals: T(m,n) = Sum( n <= i <= m+n-1 ) i!.at n=34A211370