81055

Appears in sequences

• -5-Knödel numbers.at n=41A225509
• Array read by antidiagonals: T(m,n) = number of minimal total dominating sets in the grid graph P_m X P_n.at n=59A303118
• Array read by antidiagonals: T(m,n) = number of minimal total dominating sets in the grid graph P_m X P_n.at n=61A303118
• Triangle T(n,k) (n >= 1, 0 <= k <= n-1) read by rows: number of distinct permutations after k steps of the "first transposition" algorithm.at n=38A345462
• Numbers k such that the sum of the numbers from 1 to k and that from 1 to k+1 share the same sum of divisors.at n=33A375819
• Numbers k such that s(k) = s(k+2), where s(k) is the sum of odd divisors of k (A000593).at n=19A387920