OFFSET
1,1
COMMENTS
Reversible pandigital square numbers are perfect squares containing each digit from 0 to 9 at least once and still remain square numbers (not necessarily of the same length) when reversing the digits.
LINKS
Martin Renner, Table of n, a(n) for n = 1..458
FORMULA
a(n) = sqrt(A359346(n)).
EXAMPLE
1111103^2 = 1234549876609 <~> 9066789454321 = 3011111^2.
11110922^2 = 123452587690084 <~> 480096785254321 = 21911111^2.
PROG
(Python)
from math import isqrt
from itertools import count, islice
def c(n): return len(set(s:=str(n)))==10 and isqrt(r:=int(s[::-1]))**2==r
def agen(): yield from (k for k in count(10**6) if c(k*k))
print(list(islice(agen(), 25))) # Michael S. Branicky, Dec 27 2022
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Martin Renner, Dec 27 2022
STATUS
approved