241570

Appears in sequences

• Successive powers of the matrix A=[1,2;3,4] written by rows in groups of 4.at n=29A100638
• b(n)*b(n+1), where b() = A000930().at n=17A170935
• Number of permutations (p(1), p(2), ..., p(n)) satisfying -k <= p(i)-i <= r and p(i)-i not in the set I, i=1..n, with k=2, r=4, I={-1,1,2,3}.at n=35A224809
• Expansion of Sum_{k>=0} (x * (1 + k^2 * x))^k.at n=8A360684