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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
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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
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Last modified September 15 17:22 EDT 2024. Contains 375938 sequences. (Running on oeis4.)