A136811 - OEIS

A136811

Numbers k such that k and k^2 use only the digits 0, 1, 2, 3 and 5.

0, 1, 5, 10, 11, 15, 35, 50, 55, 100, 101, 105, 110, 111, 115, 150, 235, 335, 350, 351, 500, 501, 505, 550, 1000, 1001, 1005, 1010, 1011, 1015, 1050, 1055, 1100, 1101, 1105, 1110, 1150, 1235, 1500, 1501, 2305, 2350, 3211, 3335, 3350, 3500, 3510, 3515, 5000, 5001, 5005, 5010, 5011, 5015, 5035, 5050, 5055, 5500, 5505, 10000, 10001, 10005, 10010, 10011, 10015

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

Generated with DrScheme.

LINKS

Jonathan Wellons, Table of n, a(n) for n = 1..1227

J. Wellons, Tables of Shared Digits [archived]

EXAMPLE

50530501^2 = 2553331531311001.

MATHEMATICA

With[{c={0, 1, 2, 3, 5}}, Select[FromDigits/@Tuples[c, 5], SubsetQ[c, IntegerDigits[#^2]]&]] (* Harvey P. Dale, Jun 25 2023 *)