205372

Appears in sequences

• Expansion of 1/(x^k*(1-x-3*x^(k+1))) for k=5.at n=30A143456
• The number of even permutations p of 1,2,...,n such that -1<=p(i)-i<=2 for i=1,2,...,n.at n=21A268306
• Number of length-n binary vectors beginning with 0, ending with 1, and avoiding 4 consecutive 0's and 4 consecutive 1's.at n=22A283834