6300000

Appears in sequences

• Stirling2 triangle with scaled diagonals (powers of 10).at n=22A075505
• Number of permutations of 9 indistinguishable copies of 1..n arranged in a circle with exactly 1 local maximum.at n=5A159740
• Triangle read by rows: T(n, k) = floor(binomial(n, k - 1) * (k - 1)^(k - 1) * n * (n - k + 1)^(n - k) / 2).at n=42A369072