26443

Appears in sequences

• a(n) = Sum_{k=0..n-1} Bell(k), where the Bell numbers Bell(k) are given in A000110.at n=10A005001
• a(n) = (1/3)*n^3 - n^2 - (1/3)*n - 1.at n=44A109620
• Triangle read by rows: T(n,0)=B(n) (the Bell numbers, A000110(n)), T(n,k)=0 for k < 0 or k > n, T(n,k) = T(n-1,k) + T(n-1,k-1) for n >= 1, 0 <= k <= n.at n=56A125178
• Numbers k such that k and k^2 use only the digits 2, 3, 4, 6 and 9.at n=14A137073
• Number of n X n X n triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 11.at n=6A166206
• Number of 6 X 6 X 6 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=11A166214
• Numerator of Sum_{i=0..n-1} B(i)/B(n), where B(i) = A000110(i) are the Bell numbers.at n=10A192986
• Number of length n+2 0..9 arrays with no three elements in a row with pattern aba or abb (with a!=b) and new values 0..9 introduced in 0..9 order.at n=8A243518
• a(n) = A273059(4n).at n=29A275916