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 A146297 #7 Jun 16 2019 22:30:28 %S A146297 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26, %T A146297 27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49, %U A146297 50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,68,70,72,73,74,76,78,79 %N A146297 Integers which are not the sum of a 6-almost prime and a prime. %C A146297 Largest known term is 446185740 (see b-file). No more terms < 10^9. %H A146297 Donovan Johnson, <a href="/A146297/b146297.txt">Table of n, a(n) for n=2..20150</a> %e A146297 68 is in this sequence because no 6-almost prime and a prime sum to 68. 69 is not in this sequence because the sum of 64 (6-almost prime) and 5 (prime) is 69. %t A146297 Complement[Range[1000], Union@Flatten@Outer[Plus, Select[Range[1000], PrimeOmega[#] == 6 &], Prime[Range[PrimePi[1000]]]]] (* _Robert Price_, Jun 16 2019 *) %Y A146297 Cf. A000040, A046306, A130588, A146295, A146296. %K A146297 nonn %O A146297 2,1 %A A146297 _Donovan Johnson_, Nov 05 2008