OFFSET
1,2
COMMENTS
Includes all numbers of the form ((10^k-1)/3 + 2)^2 for k >= 1, of the form (37*(10^k - 1)/3 + 14)^2 for k >= 2, and of the form ((10^k - 1)/3 + 171152)^2 for k >= 10. - Andrew Howroyd, Oct 18 2024
LINKS
Zhao Hui Du, Table of n, a(n) for n = 1..113
FORMULA
a(n) = A031153(n)^2. - Andrew Howroyd, Oct 18 2024
MATHEMATICA
Select[Range[0, 10^6]^2, SubsetQ[{1, 2, 5}, DeleteDuplicates[IntegerDigits[#]]]&] (* Stefano Spezia, Mar 09 2024 *)
CROSSREFS
KEYWORD
nonn,base,changed
AUTHOR
EXTENSIONS
a(24)-a(27) from Stefano Spezia, Mar 09 2024
STATUS
approved