387420493
domain: N
Appears in sequences
- If decimal expansion of n is ab...d, a(n) = a^a + b^b +...+ d^d.at n=29A045503
- If decimal expansion of n is ab...d, a(n) = a^a + b^b + ... + d^d (ignoring any 0's).at n=29A045512
- a(n) is the least semiprime >= n^n.at n=8A089542
- Semiprime nearest to 3^n. In case of a tie, choose the smaller.at n=18A117416
- a(n) = 3^n + 4.at n=18A168609
- Numbers of the form a^a + b^b, with a > b > 0.at n=29A218346
- Numbers of the form x^x + y^y, 1 < x < y.at n=21A385614