A078179 Primes of the form n^k + n - 1, where k>=2 is minimal.

5, 11, 19, 29, 41, 349, 71, 89, 109, 131, 20747, 181, 2177953337809371149, 239, 271, 83537, 5849, 379, 419, 461, 2494357909, 279863, 599, 15649, 701, 19709, 811, 420707233300229, 929, 991

Offset

2,1

Comments

a(n) = n^A078178(n) + n - 1.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 2..100

Example

349=A000040(70)=7^3+7-1 and 7^2+7-1=5*11, therefore a(7)=349.

Prog

(Haskell)
a078179 n = n ^ (a078178 n) + n - 1  -- Reinhard Zumkeller, Jul 16 2014

Crossrefs

Cf. A078178, A076846.

Cf. A010051, A002327.

Sequence in context: A073847 A024833 A002327 * A045451 A338566 A352795

Adjacent sequences: A078176 A078177 A078178 * A078180 A078181 A078182

Keyword

nonn

Author

Reinhard Zumkeller, Nov 20 2002

Extensions

More terms from Benoit Cloitre, Nov 20 2002

Offset corrected by Reinhard Zumkeller, Jul 16 2014

Status

approved