A046487 Palindromes k such that the sum of the first palindromes up to k is a palindrome.

1, 2, 3, 33, 77, 383, 21512

Offset

1,2

Links

Table of n, a(n) for n=1..7.

P. De Geest, World!Of Numbers

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

Cf. A002113, A046486, A046488.

Sequence in context: A358041 A066269 A083785 * A062922 A080471 A023184

Adjacent sequences: A046484 A046485 A046486 * A046488 A046489 A046490

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