18739

Appears in sequences

• Multiply by 1, add 1, multiply by 2, add 2, etc., start with 1.at n=14A019464
• a(n+1) = n*(a(n) + 1) for n >= 1, a(1) = 1.at n=7A033540
• Numbers k such that sigma(k^2+1) is a perfect square.at n=15A067465
• Antidiagonal sums of the convolution array A213768.at n=13A213770
• Volume of the Johnson square pyramid (rounded down) with all the edge lengths equal to n.at n=42A229063
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 777", based on the 5-celled von Neumann neighborhood.at n=27A273532
• Main diagonal of A332374.at n=15A332375
• Numbers that are the sum of four third powers in six or more ways.at n=15A345148
• Numbers that are the sum of four third powers in exactly six ways.at n=14A345149
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = n! * (1 + Sum_{j=0..n} j^k/j!).at n=43A368759