549504

Appears in sequences

• Number of arrangements of 4 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.at n=24A189500
• Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 2*x + 2.at n=30A257609
• Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 2*x + 2.at n=33A257609
• Total number of semimagic squares of order n that can be formed from the numbers 1, ..., n^2.at n=3A261815
• Least positive number that has exactly n different representations as the product of a number and of its decimal digits.at n=4A337051
• Numbers that have at least 3 different representations as the product of a number and of its decimal digits.at n=1A337054
• Numbers that have at least 4 different representations as the product of a number and of its decimal digits.at n=1A337100