A232110 Fourth root of n contains n as a string of digits to the immediate right of the decimal point (excluding leading zeros).
3, 4, 27, 1913227, 9821998, 3588613885932, 7625632704605, 50859949338383, 21029300554772499, 97202454420912990, 440023525444970228, 783944985766933369, 1277151495727998611, 2283977463662240937, 72927208535053310211, 365439872472838714161, 740751647624914930138
Offset: 1
Examples
1913227^(1/4) = 37.19132279207...
Links
- Sean A. Irvine, Table of n, a(n) for n = 1..19
- Robert Tanniru, PARI code
Programs
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PARI
isok(n) = {if (ispower(n, 4), return (0)); fr = frac(n^(1/4)); while (frac(fr) < 1/10, fr *= 10); nd = length(digits(n)); fr *= 10^nd; floor(fr) == n;} \\ Michel Marcus, Nov 20 2013 -
PARI
/*Sample Run Using a = [0,14], b=10, p=4 using PARI code in link */ GetAllGIs(0,14,10,4,1)
Extensions
More terms from Bert Dobbelaere, Jun 23 2024