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A053779
Numbers k such that the sum of the first k composite numbers is palindromic.
2
1, 22, 24, 167, 202, 226, 1443, 2380, 3190, 3952, 4220, 16827, 26304, 37612, 40813, 213501, 376524, 1920079, 2061085, 2635057, 3463613, 4268588, 16513206, 68101132, 166428703, 207224360, 403784450, 421279478, 1384813481
OFFSET
1,2
COMMENTS
Sequence lists numbers k such that 4 + 6 + 8 + 9 + 10 + 12 + ... + composite(k) is palindromic. For the corresponding values of composite(k) see A057959.
MATHEMATICA
Position[Accumulate[Select[Range[146*10^7], CompositeQ]], _?(PalindromeQ[ #] &)] // Flatten (* Harvey P. Dale, Sep 29 2018 *)
CROSSREFS
KEYWORD
base,nonn
AUTHOR
G. L. Honaker, Jr., Mar 29 2000
EXTENSIONS
More terms from G. L. Honaker, Jr., Mar 29 2000
Further terms added by Patrick De Geest, Nov 15 2000
STATUS
approved