A144726 Incorrect duplicate of A046966.

2, 3, 5, 7, 10, 12, 14, 15, 19, 21, 26, 29, 30, 39, 41, 56, 62, 77, 96, 105, 112, 113, 115, 121, 136, 145, 159, 168, 188, 236, 240, 258, 281, 305, 324, 362, 376, 422, 521, 588, 639, 643, 652, 695, 698, 737, 770, 776, 784, 806, 807, 809, 818, 959, 1023, 1060, 1071

Offset

1,1

Comments

Previous name was: a(n) is the smallest integer greater than a(n-1) such that a(1)*a(2)*...*a(n) + 1 is prime.

Links

Table of n, a(n) for n=1..57.

Mathematica

k = 5; a = {}; Do[If[PrimeQ[k n + 1], k = k n; AppendTo[a, n]], {n, 1, 3000}]; a

Crossrefs

Cf. A046966, A046972, A144717, A144718, A144722, A144723, A144724, A144725, A144726, A144727, A144728, A144729, A144730, A144731.

Sequence in context: A263133 A346592 A254860 * A123885 A010062 A119565

Adjacent sequences: A144723 A144724 A144725 * A144727 A144728 A144729

Keyword

dead

Author

Artur Jasinski, Sep 19 2008

Status

approved