A159293 a(n) = smallest prime congruent to 1 mod A051426(n).

3, 5, 13, 73, 241, 241, 2521, 3361, 15121, 15121, 55441, 55441, 4324321, 4324321, 4324321, 4324321, 196035841, 196035841, 1862340481, 1862340481, 1862340481, 1862340481, 10708457761, 10708457761, 214169155201, 214169155201

Offset: 1

Author

Zak Seidov, Apr 09 2009

Keywords

• nonn

Crossrefs

A051426 Least common multiple of {2, 4, 6..., 2n}.

Programs

Mathematica

L1=2;A1={3};Do[L1=LCM[L1,n];k=1;While[ !PrimeQ[p=k*L1+1],k++ ];Print[p];AppendTo[A1,n],{n,4,60,2}]