513791607420
domain: N
Appears in sequences
- a(n) = binomial coefficient C(2n, n-1).at n=21A001791
- Binomial coefficient C(42,n).at n=20A010958
- Binomial coefficient C(42,n).at n=22A010958
- a(n) = binomial(n,20).at n=22A010973
- a(n) = binomial(n,22).at n=20A010975
- a(n) = binomial(sigma(n), n).at n=19A066090
- a(n) = binomial(sigma(n+1), sigma(n)).at n=18A078504
- Expansion of (1 + 2*x)*(1 + sqrt(1+4*x))/(2*sqrt(1+4*x)).at n=22A158500
- Expansion of ( 2F1([-1/4, 1/4]; [-1/2], 16*x) - 1 ) / (2*x).at n=10A186231