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 A029967 Palindromic in bases 12 and 10. 40
 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 181, 555, 616, 676, 737, 797, 1111, 8008, 35953, 43934, 88888, 646646, 3192913, 5641465, 8364638, 9963699, 133373331, 139979931, 293373392, 520020025, 713171317, 796212697, 1393223931 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Robert G. Wilson v, Table of n, a(n) for n = 1..57 Patrick De Geest, Palindromic numbers beyond base 10 MATHEMATICA Select[Range[0, 10^5], PalindromeQ[#] && # == IntegerReverse[#, 12] &] (* Robert Price, Nov 09 2019 *) PROG (Python) from gmpy2 import digits def palQ(n, b): # check if n is a palindrome in base b s = digits(n, b) return s == s[::-1] def palQgen10(l): # generator of palindromes in base 10 of length <= 2*l if l > 0: yield 0 for x in range(1, l+1): for y in range(10**(x-1), 10**x): s = str(y) yield int(s+s[-2::-1]) for y in range(10**(x-1), 10**x): s = str(y) yield int(s+s[::-1]) A029967_list = [n for n in palQgen10(5) if palQ(n, 12)] # Chai Wah Wu, Dec 01 2014 CROSSREFS Cf. A007632, A007633, A029961, A029962, A029963, A029964, A029804, A029965, A029966, A029968, A029969, A029970, A029731, A097855, A099165. Sequence in context: A249516 A239090 A248889 * A029968 A097855 A250408 Adjacent sequences: A029964 A029965 A029966 * A029968 A029969 A029970 KEYWORD nonn,base AUTHOR Patrick De Geest STATUS approved

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Last modified May 30 12:02 EDT 2023. Contains 363050 sequences. (Running on oeis4.)