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 A083851 Decimal palindromes that are not multiples of 11. 3
 1, 2, 3, 4, 5, 6, 7, 8, 9, 101, 111, 131, 141, 151, 161, 171, 181, 191, 202, 212, 222, 232, 252, 262, 272, 282, 292, 303, 313, 323, 333, 343, 353, 373, 383, 393, 404, 414, 424, 434, 444, 454, 464, 474, 494, 505, 515, 525, 535, 545, 555, 565, 575, 585, 595, 606 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS A083850(a(n)) = 0; all members have odd length. LINKS Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 MATHEMATICA max = 600; Complement[Select[Range[max], IntegerDigits[#] == Reverse[IntegerDigits[#]] &], 11Range[Ceiling[max/11]]] (* Alonso del Arte, May 11 2014 *) PROG (PARI) is(n)=n%11 && subst(Polrev(digits(n)), 'x, 10)==n \\ Charles R Greathouse IV, May 14 2014 (Python) from itertools import chain, count, islice def A083851_gen(): # generator of terms return filter(lambda n: n % 11, chain.from_iterable((int((s:=str(d))+s[-2::-1]) for d in range(10**l, 10**(l+1))) for l in count(0))) A083851_list = list(islice(A083851_gen(), 20)) # Chai Wah Wu, Jun 23 2022 CROSSREFS Cf. A083852, A002113, A008593. Sequence in context: A056142 A056525 A071272 * A071275 A050783 A030147 Adjacent sequences: A083848 A083849 A083850 * A083852 A083853 A083854 KEYWORD nonn,base AUTHOR Reinhard Zumkeller, May 06 2003 STATUS approved

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Last modified July 24 22:37 EDT 2024. Contains 374585 sequences. (Running on oeis4.)