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A029995 Squares which are palindromes in base 9. 9
0, 1, 4, 100, 400, 6724, 8281, 10000, 26896, 532900, 672400, 2131600, 43059844, 44129449, 45212176, 53290000, 54479161, 55681444, 172239376, 186104164, 186595600, 203946961, 2921402500, 3486902500, 3583219600 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..52

P. De Geest, Palindromic Squares

MATHEMATICA

pal9Q[n_]:=Module[{idn9=IntegerDigits[n, 9]}, idn9==Reverse[idn9]]; Select[ Range[0, 60000]^2, pal9Q] (* Harvey P. Dale, Nov 12 2011 *)

CROSSREFS

Cf. A002779, A029734, A029738, A029806, A029983, A029985, A029987, A029989, A029991, A029993, A029997, A029999, A030074, A030075.

Sequence in context: A091268 A158082 A017090 * A244352 A173987 A052144

Adjacent sequences:  A029992 A029993 A029994 * A029996 A029997 A029998

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified June 29 01:38 EDT 2017. Contains 288855 sequences.