A074896 Squares written backwards and sorted, duplicates removed.

1, 4, 9, 18, 46, 52, 61, 63, 94, 121, 144, 148, 163, 169, 423, 441, 484, 487, 522, 526, 652, 675, 676, 691, 925, 927, 961, 982, 1042, 1062, 1089, 1251, 1273, 1297, 1405, 1426, 1656, 1674, 1828, 1843, 1861, 4032, 4069, 4072, 4201, 4264, 4276, 4441, 4477

Offset

1,2

Links

David A. Corneth, Table of n, a(n) for n = 1..10000

Example

163 is in the sequence as it is 19^2 = 361 written backwards. - David A. Corneth, Aug 06 2022

Prog

(PARI) uptoqdigits(n) = {my(res = List()); forstep(i = 1, sqrtint(10^n), [1, 1, 1, 1, 1, 1, 1, 1, 2], listput(res, fromdigits(Vecrev(digits(i^2))))); Set(res)} \\ David A. Corneth, Aug 06 2022

Crossrefs

Cf. A002942.

Sequence in context: A352667 A229072 A261983 * A015713 A049198 A146303

Adjacent sequences: A074893 A074894 A074895 * A074897 A074898 A074899

Keyword

nonn,easy,base

Author

Jason Earls, Sep 14 2002

Status

approved