OFFSET
2,1
LINKS
Robert Israel, Table of n, a(n) for n = 2..1655
MAPLE
f:= n -> prevprime(binomial(2*n, n)):
map(f, [$2..30]); # Robert Israel, Jan 18 2023
MATHEMATICA
z = 70;
t = Table[Binomial[2 n, n], {n, 1, z}];
Rest[NextPrime[t, -1]]
PROG
(PARI) a(n) = precprime(binomial(2*n, n)-1); \\ Michel Marcus, Dec 24 2022
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Dec 24 2022
STATUS
approved