A058412 - OEIS

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

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OFFSET

1,2

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

Table of n, a(n) for n=1..20.

P. De Geest, Index to related sequences

Hisanori Mishima, Sporadic tridigital solutions

OEIS Index to sequences related to squares.

FORMULA

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

PROG

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

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.

Sequence in context: A277946 A263610 A176923 * A231661 A006102 A263819

Adjacent sequences: A058409 A058410 A058411 * A058413 A058414 A058415

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Nov 15 2000

STATUS

approved