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.
Ceiling[Surd[10,5]^Range[0,40]] (* Harvey P. Dale, Dec 30 2017 *)
a(n) = sqrtnint(10^n-1, 5) + 1; \\ Michel Marcus, Jun 26 2024
Floor[(10^(1/5))^Range[0,40]] (* Harvey P. Dale, Sep 24 2012 *)
a(n) = sqrtnint(10^n, 5); \\ Michel Marcus, Jun 26 2024
from gmpy2 import iroot_rem def A018142(n): i,j = iroot_rem(24**n,5) return int(i) + int(32*j >= 10*i*(4*i*(2*i*(i + 1) + 1) + 1) + 1) # Chai Wah Wu, Aug 18 2016
[Round(100^(n/5)): n in [0..30]]; // G. C. Greubel, Jan 14 2018
Table[Round[100^(n/5)], {n, 0, 30}] (* G. C. Greubel, Jan 14 2018 *)
Round[Surd[100,5]^Range[0,40]] (* Harvey P. Dale, Dec 03 2024 *)
a(n)=round(100^(n/5)) \\ Charles R Greathouse IV, Jan 31 2012
from gmpy2 import iroot def A205770(n): m = 100**n i = iroot(m,5)[0] return int(i) + int(32*m >= (1+2*i)**5) # Chai Wah Wu, Aug 16 2016
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