442750

Appears in sequences

• Seventh column of (1,5)-Pascal triangle A096940.at n=20A096944
• a(n) = (n+1)*(n+2)*(n+3)*(11*n^2 + 29*n + 20)/120.at n=20A114241
• Least k formed by the concatenation of two numbers n and d such that d is the n-th divisor of k, or 0 if no such k exists.at n=43A257491
• Numbers m such that the concatenation of k and the k-th divisor of m is equal to m for some k.at n=29A258738
• a(n) = 25*(n + 1)*(4*n + 3)*(5*n + 4)/3.at n=13A300254