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 A146295 #7 Jun 16 2019 22:30:16 %S A146295 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,20,22,24,25,28,30,32,34,36, %T A146295 40,44,46,48,50,52,54,60,64,66,68,70,72,74,76,78,80,82,96,108,114,116, %U A146295 120,126,130,132,136,144,150,156,162,168,174,180,204,210,216,240,246,258 %N A146295 Integers which are not the sum of a 4-almost prime and a prime. %C A146295 Largest term is 60060 (see b-file). No more terms < 10^8. Conjectured to be complete. %H A146295 Donovan Johnson, <a href="/A146295/b146295.txt">Table of n, a(n) for n=2..196</a> %e A146295 20 is in this sequence because no 4-almost prime and a prime sum to 20. 21 is not in this sequence because the sum of 16 (4-almost prime) and 5 (prime) is 21. %t A146295 Complement[Range[1000], Union@Flatten@Outer[Plus, Select[Range[1000], PrimeOmega[#] == 4 &], Prime[Range[PrimePi[1000]]]]] (* _Robert Price_, Jun 16 2019 *) %Y A146295 Cf. A000040, A014613, A130588, A146296, A146297. %K A146295 fini,nonn %O A146295 2,1 %A A146295 _Donovan Johnson_, Nov 05 2008