A058412 Squares composed of digits {0,1,2}, not ending with zero.

1, 121, 10201, 22201, 1002001, 1022121, 1212201, 100020001, 100220121, 121022001, 210221001, 10000200001, 10002200121, 10020210201, 10201202001, 12100220001, 100021020121, 1000002000001, 1000022000121, 1000202010201

Offset: 1

Author

Patrick De Geest, Nov 15 2000

Keywords

• nonn
• base

Comments

All terms but the first one have their largest digit equal to 2, cf. A277946 = A277959^2. - M. F. Hasler, Nov 15 2017

Links

• P. De Geest, Index to related sequences
• Hisanori Mishima, Sporadic tridigital solutions
• OEIS Index to sequences related to squares.

Crossrefs

Cf. A058411.

Cf. A063009, A066139. - Zak Seidov, Jul 01 2013

Cf. A136808, A136809 and A136810, ..., A137147 for other digit combinations.

See also A277946 = A277959^2 = squares whose largest digit is 2.

The first 1261 terms are also a subsequence of A278038 (binary numbers without '111'), in turn a subsequence of the binary numbers A007088.

Programs

PARI

apply( t->t^2, vector(100,i,N=if(i>1,next_A058411(N),1))) \\ M. F. Hasler, Nov 15 2017

Formula

a(n) = A058411(n)^2. - Zak Seidov, Jul 01 2013