1511640
domain: N
Appears in sequences
- a(n) = 30*binomial(2n,n)/(n+3).at n=11A078818
- 2*A002740(n).at n=11A217213
- Denominators of first derivatives of Catalan numbers (as continuous functions of n).at n=19A260631
- Denominators of the Harary index of the n X n grid graph.at n=10A296192
- G.f. satisfies A(x) = 1 + x*A(x) / (1 + x*A(x)^2).at n=18A364735