a(n) is the least number k not ending in 0 such that k^n has at least n 0's in its decimal expansion.
A368397
a(n) is the least number k not ending in 0 such that k^n has at least n 0's in its decimal expansion.
Terms
- a(0) =101a(1) =101a(2) =101a(3) =101a(4) =101a(5) =351a(6) =518a(7) =194a(8) =1001a(9) =951a(10) =3231a(11) =3757a(12) =2169a(13) =999a(14) =1397a(15) =2273a(16) =9723a(17) =8683a(18) =13219a(19) =6152a(20) =15204a(21) =18898a(22) =39484a(23) =10001a(24) =10001a(25) =35586a(26) =46564a(27) =35085a(28) =71061a(29) =100001
External references
- oeis: A368397