A137147 Numbers k such that k and k^2 use only the digits 5, 6, 7, 8 and 9.

76, 87, 766, 887, 7666, 8887, 9786, 76587, 76666, 87576, 759576, 766666, 869866, 869867, 886886, 888587, 988866, 7666666, 8766867, 8885887, 76587576, 76666666, 76789686, 86998666, 87565786, 87685676, 88766867, 97759786, 97957576, 766666666, 875765766, 886885887, 887579686, 977699687

Offset: 1

Author

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

Keywords

• base
• nonn

Comments

Generated with DrScheme.

Examples

			989878759589576^2 = 979859958686597599779967859776.
		

Links

• Jonathan Wellons, Table of n, a(n) for n = 1..183
• J. Wellons, Tables of Shared Digits [archived]
• OEIS Index to sequences related to squares.

Crossrefs

Cf. A136808, A136809, ..., A137146 for other digit combinations.

Cf. A000290 (the squares); A027675, A058411, ..., A058474 (3-digit combinations).

Cf. A277959, A277960, A277961, A295005, ..., A295009 (squares with largest digit = 2, 3, 4, 5, ..., 9).