A157197 Numbers k such that p(k) + p(k+1) + p(k+2) = A122706(n)^n, where p(k) is a k-th prime.

3, 6, 85, 20877, 52086501, 10988577

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Example

a(1) = 3 because p(3) + p(4) + p(5) = 5 + 7 + 11 = 23 = A122706(1)^1.
a(2) = 6 because p(6) + p(7) + p(8) = 13 + 17 + 19 = 49 = 7^2 = A122706(2)^2.

Crossrefs

Cf. A122706

Sequence in context: A376934 A331403 A357245 * A363410 A211896 A299433

Adjacent sequences: A157194 A157195 A157196 * A157198 A157199 A157200

Keyword

more,nonn

Author

Alexander Adamchuk, Feb 24 2009

Extensions

a(5)-a(6) from Max Alekseyev, Dec 13 2011

Status

approved