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%I #10 Dec 30 2012 11:51:43
%S 1,22,303,323,333,343,363,393,4004,4014,4024,4034,4044,4054,4064,4074,
%T 4084,4094,4104,4114,4124,4134,4144,4154,4164,4174,4184,4194,4204,
%U 4214,4224,4234,4244,4254,4264,4274,4284,4294,4304,4314,4324,4334,4344,4354
%N Nonprimes where the first digit equals the final digit and also equals the number of digits.
%C Subsequence of A018252.
%C Sequence is finite; last term is a(9885995) = 999999999. - _Charles R Greathouse IV_, Dec 30 2012
%o (PARI) is(n)=my(d=digits(n)); !isprime(n) && d[1]==n%10 && d[1] == #d \\ _Charles R Greathouse IV_, Dec 29 2012
%K nonn,base,fini
%O 1,2
%A _Juri-Stepan Gerasimov_, Jan 27 2009
%E The definition was unclear, but I have made a guess as to what was intended. - _N. J. A. Sloane_, Feb 02 2009
%E Added requirement on digit count to the definition _R. J. Mathar_, Feb 13 2009