A347335 - OEIS

A347335

Lexicographically earliest sequence of distinct nonnegative integers such that the sum of three consecutive terms is a palindrome in base 10.

0, 1, 2, 3, 4, 15, 14, 26, 37, 25, 39, 13, 36, 6, 24, 47, 17, 35, 49, 27, 12, 5, 16, 23, 38, 40, 10, 51, 50, 20, 7, 28, 9, 18, 61, 22, 48, 29, 11, 59, 31, 21, 69, 41, 71, 19, 81, 91, 30, 60, 101, 111, 70, 122, 80, 90, 32, 100, 110, 42, 120, 130, 53, 8, 141, 63, 58, 121, 33, 68, 131, 43

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OFFSET

1,3

LINKS

Table of n, a(n) for n=1..72.

EXAMPLE

a(1) + a(2) + a(3) = 0 + 1 + 2 = 3 (palindrome);

a(2) + a(3) + a(4) = 1 + 2 + 3 = 6 (palindrome);

a(3) + a(4) + a(5) = 2 + 3 + 4 = 9 (palindrome);

a(4) + a(5) + a(6) = 3 + 4 + 15 = 22 (palindrome); etc.

PROG

(Python)