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A261907 Numbers that are the sum of two nonzero palindromes but are not palindromes themselves. 8
10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 23, 24, 25, 26, 27, 28, 29, 30, 31, 34, 35, 36, 37, 38, 39, 40, 41, 42, 45, 46, 47, 48, 49, 50, 51, 52, 53, 56, 57, 58, 59, 60, 61, 62, 63, 64, 67, 68, 69, 70, 71, 72, 73, 74, 75, 78, 79, 80, 81, 82, 83, 84, 85, 86, 89, 90, 91, 92, 93, 94, 95, 96, 97, 100, 102, 103, 104, 105, 106, 107, 108, 109, 110, 112 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 1..7814

MAPLE

# bP has a list of all palindromes (from A002113):

a3:={}; M:=60; M2:=bP[M];

for i from 2 to M do

for j from i to M do

k:=bP[i]+bP[j];

if k <= M2 and digrev(k) <> k then a3:={op(a3), k}; fi;

od: od:

b3:=sort(convert(a3, list));

CROSSREFS

Equals A261906 \ A002113. Cf. A213879, A260255.

Sequence in context: A043638 A280824 A329448 * A102357 A102850 A043493

Adjacent sequences:  A261904 A261905 A261906 * A261908 A261909 A261910

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Sep 09 2015

STATUS

approved

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Last modified April 6 22:23 EDT 2020. Contains 333291 sequences. (Running on oeis4.)