OFFSET
1,2
LINKS
Jean-Marc Falcoz, Table of n, a(n) for n = 1..10001
EXAMPLE
The sequence starts with 1,2,3,4,5,6,196,197,... and we see indeed that:
the digits of {a(1); a(2)} have sum 1 + 2 = 3 (palindrome) and a(1) + a(2) is a palindrome too (3);
the digits of {a(2); a(3)} have sum 2 + 3 = 5 (palindrome) and a(2) + a(3) is a palindrome too (5);
the digits of {a(3); a(4)} have sum 3 + 4 = 7 (palindrome) and a(3) + a(4) is a palindrome too (7);
the digits of {a(4); a(5)} have sum 4 + 5 = 9 (palindrome) and a(4) + a(5) is a palindrome too (9);
the digits of {a(5); a(6)} have sum 5 + 6 = 11 (palindrome) and a(5) + a(6) is a palindrome too (11);
the digits of {a(6); a(7)} have sum 6 + 1 + 9 + 6 = 22 (palindrome) and a(6) + a(7) = 6 + 196 is a palindrome too (202);
the digits of {a(7); a(8)} have sum 1 + 0 + 7 = 8 (palindrome) and a(7) + a(8) = is a palindrome too (3);
the digits of {a(8); a(9)} have sum 1 + 9 + 6 + 1 + 9 + 7 = 33 (palindrome) and a(8) + a(9) = 196 + 197 is a palindrome too (393);
etc.
CROSSREFS
KEYWORD
AUTHOR
Eric Angelini and Jean-Marc Falcoz, Jun 24 2019
STATUS
approved