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A337880
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 (terms ending in zero permitted).
1
1, 2, 3, 4, 5, 6, 10, 19, 28, 17, 48, 7, 18, 38, 16, 27, 47, 8, 30, 41, 52, 63, 83, 50, 15, 26, 37, 46, 9, 20, 31, 42, 53, 64, 73, 40, 51, 62, 93, 60, 14, 25, 36, 56, 12, 23, 34, 45, 65, 21, 32, 43, 54, 74, 72, 61, 102, 90, 11, 22, 33, 44, 55, 66, 57, 13, 24, 35, 67, 49, 29, 84, 71
OFFSET
1,2
COMMENTS
Terms ending in zero are permitted; when they are reversed, the leading zero(s) is (are) erased.
LINKS
EXAMPLE
a(6) = 6 and a(7) = 10; the addition 6 + (0)1 is a palindrome (7).
a(7) = 10 and a(8) = 19; the addition 10 + 91 is a palindrome (101).
a(8) = 19 and a(9) = 28; the addition 19 + 82 is a palindrome (101). Etc.
CROSSREFS
Cf. A337865 (no term ending in zero is permitted).
Sequence in context: A349862 A006543 A133745 * A271341 A306109 A281513
KEYWORD
nonn,base,look
AUTHOR
Eric Angelini and Carole Dubois, Sep 28 2020
STATUS
approved