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A115996
Numbers k such that the concatenation of the k-th prime with k gives a palindrome.
2
94, 281, 886, 60757, 642469, 17741923, 1060975242
OFFSET
1,1
EXAMPLE
prime(1060975242)=24257906011 and 242579060111060975242 is a palindrome.
CROSSREFS
Sequence in context: A304609 A116109 A107412 * A188185 A189811 A202415
KEYWORD
nonn,base,more
AUTHOR
Giovanni Resta, Feb 13 2006, Feb 13 2006
STATUS
approved