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

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Robert Tanniru, PARI code

Example

1913227^(1/4) = 37.19132279207...

Prog

(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)

Crossrefs

Cf. A074841, A232086, A074762.

Sequence in context: A362887 A367388 A042829 * A140896 A005326 A298561

Adjacent sequences: A232107 A232108 A232109 * A232111 A232112 A232113

Keyword

nonn,base,hard

Author

Robert Tanniru, Nov 18 2013

Status

approved