A070691 (Sum of digits of n)^n.
1, 4, 27, 256, 3125, 46656, 823543, 16777216, 387420489, 1, 2048, 531441, 67108864, 6103515625, 470184984576, 33232930569601, 2251799813685248, 150094635296999121, 10000000000000000000
Offset: 1
This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.