A089542 a(n) is the least semiprime > n^n.

4, 4, 33, 259, 3127, 46661, 823549, 16777219, 387420493, 10000000003, 285311670617, 8916100448287, 302875106592259, 11112006825558019, 437893890380859379, 18446744073709551617, 827240261886336764197, 39346408075296537575443, 1978419655660313589124007

Offset

1,1

Links

Table of n, a(n) for n=1..19.

Formula

a(n) = n^n + A085753(n).

Crossrefs

Cf. A001358, A085753, A089539, A089543, A089544.

Sequence in context: A217310 A298681 A189743 * A222285 A222504 A226008

Adjacent sequences: A089539 A089540 A089541 * A089543 A089544 A089545

Keyword

nonn

Author

Ray Chandler, Nov 09 2003

Extensions

Name clarified by and more terms from Jinyuan Wang, Aug 01 2021

Status

approved