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 A277459 #10 Oct 17 2016 02:19:32 %S A277459 102,387,433,436,527,656,882,1108,1181,1531,1546,1555,1667,1797,1822, %T A277459 1823,1913,1991,2009,2074,2083,2151,2311,2353,2370,2615,2626,2646, %U A277459 2671,3202,3232,3256,3278,3293,3371,3413,3511,3599,3634,3904,3929,3934,4123,4152 %N A277459 Decades with the same semiprime pattern as the next decade. %F A277459 a(n) = A220063(n)-2. %F A277459 a(n) = A277460(n)-1. %e A277459 a(1)=102 because the decade from 1020 to 1029 has the same semiprime pattern as the decade from 1030 to 1039 (1027 and 1037). %Y A277459 Cf. A220063, A277460. %K A277459 nonn %O A277459 1,1 %A A277459 _Bobby Jacobs_ and _N. J. A. Sloane_, Oct 16 2016