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A102622
Nonprime numbers n concatenated n times.
1
1, 4444, 666666, 88888888, 999999999, 10101010101010101010, 121212121212121212121212, 1414141414141414141414141414, 151515151515151515151515151515, 16161616161616161616161616161616
OFFSET
1,2
EXAMPLE
4 is a nonprime and it is concatenated four times to give 4444.
CROSSREFS
Sequence in context: A166582 A043508 A114908 * A280485 A236906 A184611
KEYWORD
nonn,base
AUTHOR
Parthasarathy Nambi, Jan 31 2005
STATUS
approved