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 A366976 #34 Dec 18 2023 18:35:35 %S A366976 1,2,3,4,6,7,8,9,12,13,15,16,20,21,24,25,30,32,35,40,42,44,47,48,52, %T A366976 56,61,66,70,72,73,80,88,93,96,98,100,107,110,119,120,140,141,144,167, %U A366976 174,179,186,190,196,204,205,234,236,252,253,260,275,290,292,299,303,310,312,313 %N A366976 Numbers that cannot be written as sum of two or more consecutive nonprimes. %C A366976 The complement sequence of sums of two or more consecutive nonprime numbers. %e A366976 9 is a term because trying the sums of candidate consecutive nonprimes 1 + 4 = 5 != 9, 1 + 4 + 6 = 11 != 9, 4 + 6 = 10 != 9. All these sums miss the integer 9. %e A366976 On the other hand, 23 is not a term because 23 = 6 + 8 + 9, which is the sum of three consecutive nonprime numbers. %Y A366976 Cf. A051349, A018252, A367021. %Y A366976 Primes in the sequence: A257393. %K A366976 nonn %O A366976 1,2 %A A366976 _Tamas Sandor Nagy_, Dec 16 2023