A085874 a(1) = 2, a(n)= smallest prime of the form k*a(n-1) - 1 where k itself is a multiple of n.

2, 3, 17, 67, 4019, 24113, 675163, 16203911, 2333363183, 23333631829, 7186758603331, 3880849645798739, 302706272372301641, 148326073462427804089, 4449782203872834122669, 498375606833757421738927

Offset

1,1

Links

Table of n, a(n) for n=1..16.

Example

a(2) = 3 = 2*2 - 1, a(3) = 17 = 6*3 -1, a(4) = 67 = 4*17 - 1, 2,6 and 4 are respectively multiples of 2,3 and 4.

Crossrefs

Cf. A085873.

Sequence in context: A078983 A235617 A201455 * A055739 A220703 A342547

Adjacent sequences: A085871 A085872 A085873 * A085875 A085876 A085877

Keyword

nonn

Author

Amarnath Murthy, Jul 07 2003

Extensions

More terms from Ray Chandler, Jul 08 2003

Status

approved