64406

Appears in sequences

• Antidiagonal sums of A163280.at n=45A163983
• Number of 6Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 2 neighboring 1s.at n=8A297303
• a(n) is the least k such that A033273(k) is equal to (A033273(n*k + 1) - 1)/n where A033273(n) is the number of nonprime divisors of n.at n=21A352256
• a(n) = Sum_{d|n} (n/d)^(n-n/d) * binomial(d+n-1,n).at n=8A363664