A356071 Numbers whose square is in A108571.

1, 20864888, 23309765, 146095088, 725027284, 745400258, 803458304, 810273142, 816409484, 1663345356, 2970502211, 5035530306, 5705842932, 5801143392, 5969549784, 6143081912, 6582975516, 6801076116, 6828208884, 6830325216, 6911416408, 7248217206, 7248822984, 7317408465

Offset

1,2

Comments

Square root of A181392. The last term is 999999999893438428238.

There are no perfect powers beyond 1 in this sequence; see the comment in A181392.

Links

Michael De Vlieger, Table of n, a(n) for n = 1..1000, computed from b-file at A181392.

Example

23309765 is a term since 23309765^2 = 543345144355225 has 1 digit '1', 2 digits '2', 3 digits '3', 4 digits '4' and 5 digits '5'.

Mathematica

Map[Sqrt, Import["https://oeis.org/A181392/b181392.txt", "Data"][[1 ;; 24, -1]] ] (* Michael De Vlieger, Jul 25 2022, computed from b-file at A181392 *)

Crossrefs

Cf. A108571, A181392, A225886, A356072.

Sequence in context: A373467 A294031 A321670 * A254497 A254490 A253862

Adjacent sequences: A356068 A356069 A356070 * A356072 A356073 A356074

Keyword

nonn,fini,base

Author

Jianing Song, Jul 25 2022

Status

approved