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 A284277 #13 Jan 08 2025 13:01:37 %S A284277 276,564,660,966,1074,1134,1464,1476,1488,1512,1560,1578,1632,1734, %T A284277 1920,1992,2232,2340,2360,2514,2664,2712,2982,3270,3366,3408,3432, %U A284277 3564,3678,3774,3876,3906,4116,4224,4290,4350,4380,4788,4800,4842 %N A284277 Primitive terms of A216072. %C A284277 In other words, such terms of A216072 that cannot be written as k*t where k is an integer, k > 1, t is a term of A216072. %e A284277 Since 276 is the first term of A216072, the number is in the sequence. But A216072(2) = 552 is not, because A216072(2) = 2 * A216072(1) = 2 * 276. %Y A284277 Cf. A216072. %K A284277 nonn,more %O A284277 1,1 %A A284277 _Sergey Pavlov_, Mar 24 2017