A208273 Composite numbers containing a digit 2.

12, 20, 21, 22, 24, 25, 26, 27, 28, 32, 42, 52, 62, 72, 82, 92, 102, 112, 120, 121, 122, 123, 124, 125, 126, 128, 129, 132, 142, 152, 162, 172, 182, 192, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221

Offset

1,1

Comments

Subsequence of A011532. Complement of A208272 with respect to A011532.

Links

Table of n, a(n) for n=1..55.

Mathematica

Select[Range[300], ! PrimeQ[#] && MemberQ[IntegerDigits[#], 2] &] (* T. D. Noe, Mar 06 2012 *)

Crossrefs

Cf. A208272 (primes containing a digit 2), A011532 (numbers containing a digit 2).

Sequence in context: A093314 A175765 A138166 * A046418 A171795 A170806

Adjacent sequences: A208270 A208271 A208272 * A208274 A208275 A208276

Keyword

nonn,base

Author

Jaroslav Krizek, Mar 04 2012

Status

approved