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 A272080 #7 Mar 13 2020 16:58:28 %S A272080 1,2,5,10,22,38,110,178,378,698,1766,2618,7442,11006,26482,58226, %T A272080 123698,178310,502490,719802,1814954,3737154,8601674,11944562, %U A272080 33535586,54001022,120654206,217935362,518197346,718356542,2441734706,3392584002,7055236194,13981570658 %N A272080 Row sums of A238498. %H A272080 Tom Edgar, <a href="http://www.emis.de/journals/INTEGERS/papers/o62/o62.Abstract.html">Totienomial Coefficients</a>, INTEGERS, 14 (2014), #A62. %o A272080 (Sage) P=[0]+[i*prod([(1+1/x) for x in prime_divisors(i)]) for i in [1..100]] %o A272080 Tr=[[prod(P[1:n+1])/(prod(P[1:k+1])*prod(P[1:(n-k)+1])) for k in [0..n]] for n in [0..len(P)-1]] %o A272080 print([sum(x) for x in Tr]) %Y A272080 Cf. A001615, A238498. %K A272080 nonn %O A272080 0,2 %A A272080 _Tom Edgar_, Apr 19 2016