A235720 -id:A235720 - cp's OEIS frontend

A235719 Squares which have one or more occurrences of exactly four different digits.

1024, 1089, 1296, 1369, 1764, 1849, 1936, 2304, 2401, 2601, 2704, 2809, 2916, 3025, 3249, 3481, 3721, 4096, 4356, 4761, 5041, 5184, 5329, 5476, 6084, 6241, 6724, 7056, 7396, 7569, 7921, 8649, 9025, 9216, 9604, 9801, 10609, 10816, 11025, 11236, 12544, 12996

Offset: 1

Colin Barker, Jan 15 2014

The first term having a repeated digit is 10609.

			5329 is in the sequence because 5329 = 73^2 and 5329 contains exactly four different digits: 2, 3, 5 and 9.

Colin Barker, Table of n, a(n) for n = 1..1000

Cf. A235717, A235718, A235720-A235724, A225218.

Select[Range[150]^2,Length[Union[IntegerDigits[#]]]==4&] (* Harvey P. Dale, May 03 2018 *)

s=[]; for(n=1, 300, if(#vecsort(eval(Vec(Str(n^2))),,8)==4, s=concat(s, n^2))); s

a(n) = A054032(n)^2.

A235721 Squares which have one or more occurrences of exactly six different digits.

Original entry on oeis.org

103684, 104329, 104976, 107584, 123904, 124609, 132496, 134689, 139876, 140625, 157609, 162409, 164025, 170569, 173056, 180625, 195364, 198025, 207936, 209764, 214369, 237169, 254016, 257049, 258064, 259081, 279841, 293764, 310249, 318096, 321489, 326041

Offset: 1

Colin Barker, Jan 15 2014

The first term having a repeated digit is 1028196.

			124609 is in the sequence because 124609 = 353^2 and 124609 contains exactly six different digits: 0, 1, 2, 4, 6 and 9.

Colin Barker, Table of n, a(n) for n = 1..1000

Cf. A235717-A235720, A235722-A235724, A225218.

s=[]; for(n=1, 1200, if(#vecsort(eval(Vec(Str(n^2))),,8)==6, s=concat(s, n^2))); s

a(n) = A054034(n)^2.

cp's OEIS Frontend

A235719 Squares which have one or more occurrences of exactly four different digits.

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