A168042 The non-single or nonisolated numbers whose digits are all square.

0, 1, 9, 10, 11, 14, 19, 40, 41, 44, 49, 90, 91, 94, 99, 100, 101, 104, 109, 110, 111, 114, 119, 140, 141, 144, 149, 190, 191, 194, 199, 400, 404, 410, 411, 414, 419, 440, 441, 444, 490, 494, 900, 901, 904, 909, 910, 914, 940, 944, 949, 990, 994, 999, 1000, 1001

Offset: 1

Author

Juri-Stepan Gerasimov, Nov 17 2009

Keywords

• nonn
• base
• less

Comments

Square digits are 0, 1, 4 or 9. The non-single or nonisolated numbers are 0, 1, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 20, 21,..

Crossrefs

Cf. A000290, A157908, A167707.

Extensions

Entries checked by R. J. Mathar, May 30 2010