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 A337160 #9 Jan 28 2021 21:41:41 %S A337160 2213,4073,8011,9041,15649,23663,37483,38453,59663,63487,65111,71861, %T A337160 83557,97157,100279,118801,129527,131707,139291,163601,166597,166799, %U A337160 180181,180233,195691,203807,209233,217201,227561,238657,289139,309121,327473 %N A337160 Primes p such that the 3 X 3 matrix with components (row by row) prime(k+m), 0 <= m <= 8 has zero determinant, where p = prime(k). %C A337160 Primes arising from A117345. %F A337160 a(n) = prime(A117345(n)). %e A337160 The next 8 primes after 2213 are 2221, 2237, 2239, 2243, 2251, 2267, 2269, 2273, and we have det({{2213, 2221, 2237}, {2239, 2243, 2251}, {2267, 2269, 2273}}) = 0, hence 2213 is a term. %o A337160 (PARI) for(k=1, 35000, M=matrix(3, 3, i, j, prime(k+3*(i-1)+j-1)); if(matdet(M, 1)==0, print1(prime(k), ", "))) %Y A337160 Cf. A117330, A117345, A340923. %K A337160 nonn %O A337160 1,1 %A A337160 _Jianing Song_, Jan 28 2021