63856

Appears in sequences

• Number of degree-n even permutations of order dividing 2.at n=12A000704
• One half of the number of Young tableaux with n cells whose shape is asymmetric.at n=12A067142
• E.g.f. cosh(x+x^2/2).at n=12A085386
• Number of permutations in the symmetric group S_n such that the size of their conjugacy class is odd.at n=11A088042
• Indices of primes in sequence defined by A(0) = 63, A(n) = 10*A(n-1) + 43 for n > 0.at n=8A101535
• G.f. satisfies: A(x) = C(2x)*A(x^3*C(2x)^4), where C(x) is the g.f. of the Catalan numbers (A000108).at n=7A120916
• The Wiener index of the graph \|/_\/_\/_..._\/_\|/ having n nodes on the horizontal path.at n=31A180571
• a(n) = 4^n - 2^(n-6)*15*binomial(n,6).at n=8A384536