72846

Appears in sequences

• Expansion of 1/(1 - 3*x^2 - x^3).at n=19A052931
• Number of (s(0), s(1), ..., s(2n+1)) such that 0 < s(i) < 9 and |s(i) - s(i-1)| = 1 for i = 1,2,...,2n+1, s(0) = 1, s(2n+1) = 6.at n=8A094829
• a(n) = 100*n^2 - 2*n.at n=27A158129
• Number of 5-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=20A187300
• Integers k such that (2^k + 1) + (3^k + 1) + (5^k + 1) is prime.at n=21A268064
• a(n) = n^2*(n*(4*n + 3) + 3*n*(-1)^n - 4)/96.at n=35A302758
• a(n) = 3*binomial(2*n+1,n+1) - n^2 - 2*n - 4.at n=7A387922