86812

Appears in sequences

• T(n,k)=Number of (n+1)X(k+1) arrays of permutations of 0..(n+1)*(k+1)-1 with each element having directed index change 1,0 0,-1 1,2 or -1,1.at n=58A264583
• Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 1,0 0,-1 1,2 or -1,1.at n=7A264587
• p-INVERT of the positive integers, where p(S) = 1 - 4*S + 2*S^2.at n=6A291183
• Number of upper triangulations of the Koch chain K_s.at n=4A352496
• Integers k such that there exists an integer 0<m<k such that sigma(m)^2 + sigma(k)^2 = 2*(m+k)^2.at n=23A385008