login
A328996
Numbers with at least three digits such that the absolute differences between successive digits forms a palindrome without leading zeros.
1
101, 121, 123, 131, 135, 141, 147, 151, 159, 161, 171, 181, 191, 202, 210, 212, 232, 234, 242, 246, 252, 258, 262, 272, 282, 292, 303, 313, 321, 323, 343, 345, 353, 357, 363, 369, 373, 383, 393, 404, 414, 420, 424, 432, 434
OFFSET
1,1
COMMENTS
The subset of A086918 that has the first two digits distinct.
LINKS
MATHEMATICA
pddQ[n_]:=Module[{idn=IntegerDigits[n]}, idn[[1]]!=idn[[2]]&&PalindromeQ[ FromDigits[Abs[Differences[idn]]]]]; Select[Range[100, 500], pddQ] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Nov 14 2019 *)
CROSSREFS
Cf. A086918.
Sequence in context: A038370 A084430 A182693 * A046075 A088882 A261453
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Nov 14 2019
STATUS
approved