297136

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=42A080013
• a(n) = 15n^2 + 13n^3.at n=28A085377
• Coefficient of X^2 in expansion of (1 + n*X + n*X^2)^n.at n=27A092365
• Maximum value achievable for n X n version of Le Monde grid problem.at n=4A224784
• Number of (1+1) X (n+1) arrays of permutations of 0..n*2+1 with each element having directed index change -1,1 0,-1 0,1 or 1,0.at n=19A264507