This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A284788 #20 Apr 15 2017 09:49:49
%S A284788 2,4,6,8,10,12,14,16,18,20,22,24,26,28,32,34,38,40,44,46,52,56,62,68
%N A284788 Even numbers that cannot be represented in at least two ways as the sum of two odd composites.
%C A284788 If n is even and n > 68, then n can be written as at least two distinct sums of two composite odd integers.
%D A284788 D. Wells, The Penguin Dictionary of Curious and Interesting Numbers, 1997, page 111.
%e A284788 34 is in the sequence because 34 = 9 + 25 but cannot be represented in a second way as the sum of two odd composites with 9, 15, 21, 25, 27, 33.
%t A284788 oddco = Select[Range[9, 100, 2], ! PrimeQ[#] &]; Select[Range[2, 100, 2], Length@ Quiet@ IntegerPartitions[#, {2}, oddco, 2] < 2 &] (* _Giovanni Resta_, Apr 03 2017 *)
%Y A284788 Cf. A118081, A284787 (complement).
%K A284788 fini,full,nonn
%O A284788 1,1
%A A284788 _Bernard Schott_, Apr 03 2017