1404728325

Appears in sequences

• Number of permutations in the symmetric group S_n that have odd order.at n=13A000246
• Expansion of e.g.f.: exp(arcsinh(x)+log(x+1))=1+2*x+3/2!*x^2+3/3!*x^3-3/4!*x^4-15/5!*x^5...at n=14A013069
• Denominators q[ n ] of convergents to Stern's non-simple continued fraction for Pi/2.at n=12A046126
• Number of level permutations of degree n.at n=13A053195
• a(n) = (2n-1)!! * (2n+1)!!, where the double factorial is A006882.at n=6A079484
• Expansion of e.g.f.: sin(arctan(x)).at n=13A177698
• Number of permutations on [n] admitting an eighth root.at n=13A247006
• Table of the number of ways T(m,n) to partition a 2m X 2n grid into Cartesian products of size 2 X 2, read by ascending antidiagonals.at n=22A373692
• Table of the number of ways T(m,n) to partition a 2m X 2n grid into Cartesian products of size 2 X 2, read by ascending antidiagonals.at n=26A373692
• Expansion of e.g.f. x + sqrt(x^2 + 1).at n=14A385369