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A159293
a(n) = smallest prime congruent to 1 mod A051426(n).
0
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
1,1
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}]
CROSSREFS
A051426 Least common multiple of {2, 4, 6..., 2n}.
Sequence in context: A144718 A347866 A066141 * A051901 A268021 A018928
KEYWORD
nonn
AUTHOR
Zak Seidov, Apr 09 2009
STATUS
approved