A393149 Numbers that cannot be represented as a sum or difference of two palindromes.

1031, 1041, 1051, 1061, 1071, 1074, 1081, 1091, 1101, 1139, 1148, 1157, 1175, 1240, 1249, 1258, 1267, 1301, 1341, 1350, 1351, 1359, 1361, 1368, 1371, 1377, 1381, 1391, 1401, 1431, 1451, 1460, 1461, 1469, 1471, 1478, 1481, 1491, 1501, 1531, 1541, 1561, 1570, 1571, 1579, 1581, 1591, 1601, 1631, 1641

Offset

1,1

Links

Table of n, a(n) for n=1..50.

Dmitry Kamenetsky, Smallest number that is not a sum or difference of two palindromes, Puzzle StackExchange.

Formula

Intersection of A035137 and A104444.

Intersection of A035137 and A084843.

Crossrefs

Sequence in context: A260607 A298910 A256075 * A351673 A061327 A023062

Adjacent sequences: A393146 A393147 A393148 * A393150 A393151 A393152

Keyword

nonn,base

Author

Dmitry Kamenetsky, Feb 02 2026

Status

approved