1048008domain: NAppears in sequencesNumber of non-monotonic functions from [k] to [n-k].at n=52A189711Number of (1+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 5 6 or 7.at n=17A252680