A261907 Numbers that are the sum of two nonzero palindromes but are not palindromes themselves.

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

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 A350445

Adjacent sequences: A261904 A261905 A261906 * A261908 A261909 A261910

Keyword

nonn,base

Author

N. J. A. Sloane, Sep 09 2015

Status

approved