416368

Appears in sequences

• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=2, I={0,1}.at n=43A080013
• 1/4 the number of (n+1)X(n+1) 0..3 symmetric matrices with every 2X2 subblock having one or two distinct values.at n=3A211102
• Number of 5Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors not equal to itself.at n=22A265995