OFFSET
1,1
COMMENTS
All terms are prime powers (A246655). [Corrected by Amiram Eldar, May 27 2024]
REFERENCES
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
T. D. Noe, Table of n, a(n) for n=1..10000
P. Erdős, R. L. Graham, I. Z. Russa and E. G. Straus, On the prime factors of C(2n,n), Math. Comp. 29 (1975), 83-92.
FORMULA
MATHEMATICA
a[n_] := Module[{k = 1, b = Binomial[2*n, n]}, While[Divisible[b, k], k++]; k]; Array[a, 100] (* Amiram Eldar, May 27 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved