A173868 Smallest primes > Catalan numbers.

2, 3, 7, 17, 43, 137, 431, 1433, 4871, 16811, 58787, 208037, 742909, 2674453, 9694849, 35357711, 129644831, 477638741, 1767263209, 6564120463, 24466267027, 91482563651, 343059613667, 1289904147349, 4861946401453, 18367353072191

Offset

1,1

Links

Table of n, a(n) for n=1..26.

Mathematica

PrimeNext[n_]:=Module[{k=n+1}, While[ !PrimeQ[k], k++ ]; k]; f[n_]:=(2n)!/n!/(n+1)!; Table[PrimeNext[f[n]], {n, 40}]

Crossrefs

Cf. A000108, A173867

Sequence in context: A257553 A143013 A113483 * A274291 A358456 A208987

Adjacent sequences: A173865 A173866 A173867 * A173869 A173870 A173871

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Feb 28 2010

Status

approved