A261921 - OEIS

A261921

Nonpalindromes which are the sum of two palindromes whose lengths differ by 1.

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, 101, 102, 103, 104, 105, 106, 107, 108, 112, 122, 123, 132

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OFFSET

1,1

COMMENTS

More than the usual number of terms are displayed in order to show that this is different from A261907.

LINKS

Table of n, a(n) for n=1..85.

EXAMPLE

12=11+1 and 100=99+1 are members.

10 is not a member since it is only the sum of two palindromes (5+5) whose lengths are equal.

CROSSREFS

Cf. A002113. A subsequence of A261907. A261920 shows the differences.