540792

Appears in sequences

• Number of (n+2) X (1+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 1 3 4 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 1 3 4 6 or 7.at n=8A252543
• Numbers k for which A003415(k) >= A276086(k) > k, where A003415 is the arithmetic derivative and A276086 is the primorial base exp-function.at n=43A351229