A337865 Lexicographically earliest sequence of distinct positive integers such that the sum of a(n) and [a(n+1) reversed] is a palindrome in base 10.

1, 2, 3, 4, 5, 6, 17, 28, 37, 7, 18, 38, 16, 27, 47, 8, 19, 29, 51, 62, 73, 82, 71, 102, 9, 31, 42, 53, 64, 74, 41, 52, 63, 83, 61, 72, 92, 91, 111, 101, 121, 131, 141, 151, 15, 26, 57, 13, 24, 35, 46, 55, 11, 22, 33, 44, 75, 65, 21, 32, 43, 54, 76, 56, 12, 23, 34, 45, 66

Offset: 1

Author

Eric Angelini and Carole Dubois, Sep 27 2020

Keywords

• nonn
• base
• look

Comments

Terms ending in zero are not in the sequence; when reversed they produce a term with a leading zero.

Examples

			a(7) = 17 and a(8) = 28; the addition 17 + 82 is a palindrome (99).
a(8) = 28 and a(9) = 37; the addition 28 + 73 is a palindrome (101). Etc.
		

Links

• Carole Dubois, Table of n, a(n) for n = 1..5001

Crossrefs

Cf. A228730 (the sum of two consecutive terms is a palindrome in base 10).