A045784 Squares with initial digit '1'.

1, 16, 100, 121, 144, 169, 196, 1024, 1089, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681, 1764, 1849, 1936, 10000, 10201, 10404, 10609, 10816, 11025, 11236, 11449, 11664, 11881, 12100, 12321, 12544, 12769, 12996, 13225, 13456, 13689, 13924

Offset: 1

Author

Jeff Burch

Keywords

• nonn
• base

Links

• N. J. A. Sloane, Table of n, a(n) for n = 1..20000

Crossrefs

Cf. A045855.

Cf. A045785, A045786, A045787, A045788, A045789, A045791, A045792, A045793.

Programs

Mathematica

Select[Range[120]^2,First[IntegerDigits[#]]==1&] (* Harvey P. Dale, Dec 31 2011 *)

Formula

a(n) = A045855(n)^2. - Michel Marcus, Sep 04 2021