61872

Appears in sequences

• Irregular triangle: p(k, x) = 2*x*p(k-1, x) + (1 - x^2)*p(k-2, x) for even k, p(k, x) = 2*(k-1)*p(k-1, x) - x*p(k-2, x) for odd k.at n=45A123242
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.at n=8A150790
• The number of permutations p of {1,...,n} such that |p(i)-p(i+1)| is in {1,2,3,4,5} for all i from 1 to n-1.at n=8A174702
• Fibonacci sequence beginning 11, 8.at n=19A206420
• Number of permutations p of {1,...,n} such that |p(i+1)-p(i)| < k, k=2,...,n; T(n,k), read by rows.at n=32A249631
• Expansion of 1/(g * (2-g))^2, where g = 1+x*g^4 is the g.f. of A002293.at n=7A391220