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 A022478 #10 May 16 2019 08:44:43 %S A022478 0,0,1,1,1,1,2,4,8,6,10,9,14,16,21,28,38,45,69,86,123,157,210,280,363, %T A022478 480,622,818,1104,1453,1940,2567,3421,4534,5996,7992,10590,14005, %U A022478 18596,24707,32784,43361,57566,76449,101457,134506,178495,237051 %N A022478 Number of 2's in n-th term of A006711. %Y A022478 Cf. A006711, A022477, A022479. %K A022478 nonn,base %O A022478 1,7 %A A022478 _Clark Kimberling_ %E A022478 More terms from _Sean A. Irvine_, May 15 2019