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 A060947 Intrinsic 10-palindromes: n is an intrinsic k-palindrome if it is a k-digit palindrome in some base. 10
 513, 561, 585, 633, 645, 693, 717, 765, 771, 819, 843, 891, 903, 951, 975, 1023, 19684, 20008, 20332, 20440, 20764, 21088, 21196, 21520, 21844, 21880, 22204, 22528, 22636, 22960, 23284, 23392, 23716, 24040, 24076, 24400, 24724, 24832 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS See A060873 for more information. LINKS Peter Kagey, Table of n, a(n) for n = 1..10000 MATHEMATICA testQ[n_, k_] := For[b = 2, b <= Ceiling[(n-1)^(1/(k-1))], b++, d = IntegerDigits[n, b]; If[Length[d] == k && d == Reverse[d], Return[True]]]; n0[k_] := 2^(k-1) + 1; Reap[Do[If[testQ[n, 10] === True, Print[n, " ", FromDigits[d], " b = ", b]; Sow[n]], {n, n0[10], 25000}]][[2, 1]] (* Jean-François Alcover, Nov 07 2014 *) CROSSREFS Cf. A060873-A060879. Sequence in context: A017553 A087931 A044879 * A182108 A066697 A076338 Adjacent sequences: A060944 A060945 A060946 * A060948 A060949 A060950 KEYWORD nonn,base AUTHOR Harvey P. Dale, May 08 2001 STATUS approved

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Last modified May 23 02:30 EDT 2024. Contains 372758 sequences. (Running on oeis4.)