A029995 Squares which are palindromes in base 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

Offset

1,3

Links

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

Patrick De Geest, Palindromic Squares in bases 2 to 17

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: A326085 A158082 A017090 * A365608 A244352 A173987

Adjacent sequences: A029992 A029993 A029994 * A029996 A029997 A029998

Keyword

nonn,base

Author

Patrick De Geest

Status

approved