OFFSET
1,1
MATHEMATICA
h[n_] := n*(2*n - 1); Select[h /@ Range[50000], Length @ DeleteDuplicates @ IntegerDigits[#] == 10 &] (* Amiram Eldar, Aug 19 2021 *)
PROG
CROSSREFS
KEYWORD
nonn,base,less
AUTHOR
Dumitru Damian, Aug 19 2021
STATUS
approved