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A046487
Palindromes k such that the sum of the first palindromes up to k is a palindrome.
2
1, 2, 3, 33, 77, 383, 21512
OFFSET
1,2
FORMULA
a(n) = A002113(1+A046486(n)). - R. J. Mathar, Sep 09 2015
EXAMPLE
a(n)=77 so 1+2+3+4+5+6+7+8+9+11+22+33+44+55+66+77 = 353.
CROSSREFS
KEYWORD
nonn,hard,base
AUTHOR
Patrick De Geest, Sep 15 1998
EXTENSIONS
Offset changed to 1 by R. J. Mathar, Sep 09 2015
STATUS
approved