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A030148 Odd palindromes in which parity of digits alternates. 3
1, 3, 5, 7, 9, 101, 121, 141, 161, 181, 303, 323, 343, 363, 383, 505, 525, 545, 565, 585, 707, 727, 747, 767, 787, 909, 929, 949, 969, 989, 10101, 10301, 10501, 10701, 10901, 12121, 12321, 12521, 12721, 12921, 14141, 14341, 14541, 14741 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Matthew House, Table of n, a(n) for n = 1..10000

MATHEMATICA

apQ[n_]:=And@@(#[[1]]!=#[[2]]&/@Partition[Boole[EvenQ[ IntegerDigits[ n]]], 2, 1]); Select[Range[1, 15000, 2], PalindromeQ[#]&&apQ[#]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 15 2021 *)

CROSSREFS

Sequence in context: A085951 A132286 A070788 * A068061 A332970 A316492

Adjacent sequences:  A030145 A030146 A030147 * A030149 A030150 A030151

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified July 4 05:31 EDT 2022. Contains 355064 sequences. (Running on oeis4.)