72730

Appears in sequences

• The (2^n)-th composite number.at n=16A065856
• Numbers whose square is the concatenation of two numbers k and k+4.at n=8A115438
• Numbers n such that 10^n - 99 is prime.at n=17A178439
• Number of 3 X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 3 X n array.at n=34A219774
• Triangular array, read by rows: T(n,k) = [(x*y*z)^k] (-1 + (1 + x + 1/x)*(1 + y + 1/y)*(1 + z + 1/z))^n for -n <= k <= n.at n=29A329819
• Triangular array, read by rows: T(n,k) = [(x*y*z)^k] (-1 + (1 + x + 1/x)*(1 + y + 1/y)*(1 + z + 1/z))^n for -n <= k <= n.at n=31A329819