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A029733 Numbers k such that k^2 is palindromic in base 16. 12
0, 1, 2, 3, 17, 34, 257, 273, 289, 305, 319, 514, 530, 546, 773, 1377, 4097, 4369, 4641, 8194, 8254, 8466, 8734, 9046, 51629, 65537, 65793, 66049, 66305, 69649, 69905, 70161, 70417, 73505, 73761, 74017, 74273, 76879, 92327, 131074 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

P. De Geest, Palindromic numbers beyond base 10

MATHEMATICA

n2palQ[n_]:=Module[{id=IntegerDigits[n^2, 16]}, id==Reverse[id]]; Select[ Range[ 0, 150000], n2palQ] (* Harvey P. Dale, Mar 31 2018 *)

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), A030073 (b=15), this sequence (b=16), A118651 (b=17).

Sequence in context: A193051 A217688 A263570 * A153686 A042137 A067976

Adjacent sequences:  A029730 A029731 A029732 * A029734 A029735 A029736

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified December 3 22:32 EST 2021. Contains 349468 sequences. (Running on oeis4.)