A158304 -id:A158304 - cp's OEIS frontend

A136810 Numbers k such that k and k^2 use only the digits 0, 1, 2, 3 and 4.

0, 1, 2, 10, 11, 12, 20, 21, 32, 100, 101, 102, 110, 111, 120, 200, 201, 210, 320, 321, 332, 1000, 1001, 1002, 1010, 1011, 1012, 1020, 1021, 1100, 1101, 1102, 1110, 1111, 1200, 1201, 2000, 2001, 2010, 2011, 2100, 2101, 3200, 3210, 3320, 3332, 10000, 10001, 10002, 10010, 10011, 10012, 10020, 10021, 10100, 10101, 10110, 10111, 10120, 10200, 10210, 11000

Offset: 1

Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

Generated with DrScheme.

			3230203421^2 = 10434214141040103241.

Jonathan Wellons, Table of n, a(n) for n = 1..1754
J. Wellons, Tables of Shared Digits [archived]

Cf. A158304.

A158082 Squares whose decimal expansion contains no digit greater than 4.

Original entry on oeis.org

0, 1, 4, 100, 121, 144, 324, 400, 441, 1024, 1444, 2304, 2401, 10000, 10201, 10404, 12100, 12321, 14400, 22201, 23104, 32041, 32400, 33124, 40000, 40401, 44100, 101124, 102400, 103041, 110224, 114244, 121104, 123201, 130321, 131044, 144400, 203401, 204304, 213444

Offset: 1

N. J. A. Sloane, May 23 2010

Erich Friedman, What's Special About This Number?

Cf. A158304.

Intersection of A000290 and A007091.

Select[Range[0, 1000]^2, Max[IntegerDigits[#]] <= 4 &] (* Paolo Xausa, Apr 29 2024 *)

A175471 Numbers n such that n^2 contains no digit less than 5.

Original entry on oeis.org

3, 24, 26, 76, 83, 87, 236, 264, 313, 314, 316, 766, 816, 824, 834, 836, 883, 887, 937, 2366, 2383, 2387, 2424, 2563, 2626, 2976, 3114, 7613, 7666, 8117, 8167, 8184, 8234, 8286, 8366, 8716, 8813, 8814, 8887, 8937, 9266, 9316, 9363, 9417, 9474, 9786, 9833

Offset: 1

Zak Seidov, May 24 2010

Cf. A158082, A158304.

Select[Range[10000],Min[IntegerDigits[#^2]]>4&] (* Harvey P. Dale, Dec 31 2013 *)

isok(n) = vecmin(digits(n^2)) > 4; \\ Michel Marcus, Oct 15 2013

cp's OEIS Frontend

A136810 Numbers k such that k and k^2 use only the digits 0, 1, 2, 3 and 4.

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A158082 Squares whose decimal expansion contains no digit greater than 4.

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Mathematica

A175471 Numbers n such that n^2 contains no digit less than 5.

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Mathematica

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