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 A026294 #10 May 02 2024 09:49:02 %S A026294 1,3,27,266,2743,29068,313633,3427358,37810605,420193609,4696967294, %T A026294 52753182426,594829939672,6729488070844,76349568744149, %U A026294 868359048628146,9897485221142239,113024337104850132,1292850211089736299,14810711124377556034,169898355365054443380 %N A026294 T(4n,n), where T is the array in A026268. %Y A026294 Cf. A026268. %K A026294 nonn %O A026294 0,2 %A A026294 _Clark Kimberling_ %E A026294 More terms from _Sean A. Irvine_, Sep 24 2019