A030073 Numbers k such that k^2 is palindromic in base 15.

0, 1, 2, 3, 4, 8, 12, 16, 19, 32, 39, 64, 76, 128, 144, 226, 241, 256, 271, 311, 452, 467, 478, 482, 576, 715, 904, 964, 1024, 1748, 1808, 1868, 2304, 2652, 2860, 3376, 3401, 3616, 3856, 4639, 6752, 6992, 7172, 8649, 10715, 13504, 13604

Offset

1,3

Links

Seiichi Manyama, Table of n, a(n) for n = 1..100

Patrick De Geest, Palindromic Squares

Mathematica

p15Q[n_]:=Module[{id15=IntegerDigits[n^2, 15]}, id15==Reverse[id15]]; Select[ Range[0, 14000], p15Q] (* Harvey P. Dale, Jun 03 2020 *)

Crossrefs

Numbers k such that k^2 is palindromic in base b: A003166 (b=2), A029984 (b=3), A029986 (b=4), A029988 (b=5), A029990 (b=6), A029992 (b=7), A029805 (b=8), A029994 (b=9), A002778 (b=10), A029996 (b=11), A029737 (b=12), A029998 (b=13), A030072 (b=14), this sequence (b=15), A029733 (b=16), A118651 (b=17).

Sequence in context: A344301 A032939 A366201 * A115271 A189375 A262975

Adjacent sequences: A030070 A030071 A030072 * A030074 A030075 A030076

Keyword

base,nonn

Author

Patrick De Geest

Status

approved