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 A373984 #6 Jun 25 2024 20:19:05
%S A373984 1,0,0,0,0,4,0,2,24,28,0,14,0,208,144,8,0,58,0,86,1044,2308,0,36,840,
%T A373984 30028,198,626,0,322,0,22,11544,510508,6060,128,0,9699688,150144,204,
%U A373984 0,2302,0,6926,1038,223092868,0,82,43680,1738,2552544,90086,0,412,66960,1464,48498444,6469693228,0,680,0,200560490128
%N A373984 a(n) = A108951(n) - A373158(n), where A108951 is fully multiplicative and A373158 is fully additive with a(p) = p# for prime p, where x# is the primorial A034386(x).
%H A373984 Antti Karttunen, <a href="/A373984/b373984.txt">Table of n, a(n) for n = 1..4096</a>
%H A373984 <a href="/index/Pri#primorial_numbers">Index entries for sequences related to primorial numbers</a>
%o A373984 (PARI) A373984(n) = { my(f=factor(n),m=1,s=0); for(i=1, #f~, my(x=prod(i=1,primepi(f[i, 1]),prime(i))); s += f[i, 2]*x; m *= x^f[i, 2]); (m-s); };
%Y A373984 Cf. A002110, A034386, A108951, A373158, A373985.
%K A373984 nonn
%O A373984 1,6
%A A373984 _Antti Karttunen_, Jun 25 2024