63504000

Appears in sequences

• Numbers which can be expressed as product of a number and its reversal in at least three different ways.at n=12A066590
• Least common multiple (LCM) of denominators of the rows of the triangle of rationals A119935/A119932.at n=9A119936
• Triangle T(n, k) = c(n)/(c(k)*c(n-k)) where c(n) = (n-2)!*(n-1)!*n!*(n+1)!*(n+3)!/1440 with c(0) = c(1) = 1 and c(2) = 2, read by rows.at n=30A173890
• Triangle T(n, k) = c(n)/(c(k)*c(n-k)) where c(n) = (n-2)!*(n-1)!*n!*(n+1)!*(n+3)!/1440 with c(0) = c(1) = 1 and c(2) = 2, read by rows.at n=33A173890
• Number of nX4 array permutations with every element making zero or one right-handed knight moves (out 2, right 1).at n=8A209539
• Numbers k such that uphi(k)/phi(k) > uphi(m)/phi(m) for all m < k, where phi(k) is the Euler totient function (A000010) and uphi(k) is the unitary totient function (A047994).at n=36A283052
• Coreful 4-abundant numbers: numbers k such that csigma(k) > 4*k, where csigma(k) is the sum of the coreful divisors of k (A057723).at n=19A340110
• Denominator of the greatest probability that a particular fixed polyomino with n cells appears in the Eden growth model (see A367760).at n=7A367767
• E.g.f. A(x) satisfies A(x) = exp(x^3 * (1+x)^2 * A(x)).at n=10A389787