34524

Appears in sequences

• Fibonacci sequence beginning 1, 21.at n=17A022391
• a(n) = (1 + 1/2 + 1/3 + ... + 1/n)*(2n-1)!/(n-1)!.at n=4A058607
• a(n) = n*(5*n^2 - 3)/2.at n=24A063522
• Number of 4-way intersections in the interior of a regular 6n-gon.at n=41A137938
• A bisection of A063522.at n=12A160699
• Terms of A177763 which have more than one such representation.at n=28A177766
• A generalized Narayana triangle for sec(x)^2.at n=48A180960
• A generalized Narayana triangle for sec(x)^2.at n=51A180960
• Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|=2|x-y|-|y-z|.at n=36A212577
• p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - 2 S + S^3.at n=11A291414
• Triangle read by rows: T(n,k) is the number of non-crossing set partitions of {1..5n} into n sets of 5 with k of the sets being a contiguous set of elements.at n=33A334063
• Triangle read by rows of partial Bell polynomials B_{n,k}(x_1,...,x_{n-k+1}) evaluated at 2, 2, 12, 72, ..., (n-k)(n-k+1)!, divided by (n-k+1)!, n >= 1, 1 <= k <= n.at n=40A353132
• Expansion of e.g.f. 1/(1 + LambertW(-x^3/6 * exp(x))).at n=9A362705