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A206286
Nonprime numbers starting with a digit 1.
2
1, 10, 12, 14, 15, 16, 18, 100, 102, 104, 105, 106, 108, 110, 111, 112, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 128, 129, 130, 132, 133, 134, 135, 136, 138, 140, 141, 142, 143, 144, 145, 146, 147, 148, 150, 152, 153, 154, 155, 156, 158
OFFSET
1,2
COMMENTS
Complement of A045707 with respect to A131835. Supersequence of A206288.
MATHEMATICA
Select[Range[200], ! PrimeQ[#] && IntegerDigits[#][[1]] == 1 &] (* T. D. Noe, Feb 13 2012 *)
CROSSREFS
Cf. A045707 (primes with first digit 1), A131835 (numbers starting with a digit 1).
Sequence in context: A099103 A208271 A094879 * A116023 A062408 A127653
KEYWORD
nonn,base
AUTHOR
Jaroslav Krizek, Feb 12 2012
STATUS
approved