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 A318252 #7 Sep 27 2018 05:04:32 %S A318252 13312,81551360,1946157056,128580583424,12695923326976,33590071001088, %T A318252 2182874178519040,59672695062659072 %N A318252 Larger of amicable numbers pair (m, n) such that n = H(m) and m = H(n) where H(n) = A074206(n) is the number of ordered factorizations of n. %C A318252 The lesser numbers in each pair are in A318251. %C A318252 Analogous to A002046 as A163272 is analogous to A000396. %C A318252 If p and 4p+1 are primes then 2^(4p-2)*(4p+1) is in this sequence. %e A318252 13312 is in the sequence since A074206(13312) = 6144 and A074206(6144) = 13312. %o A318252 (PARI) f(n) = if( n<2, n>0, my(A = divisors(n)); sum(k=1, #A-1, f(A[k]))); %o A318252 isok(n)={my(a=f(n)); a<n && f(a)==n;} \\ _Michel Marcus_, Sep 26 2018 %Y A318252 Cf. A023212, A074206, A090866, A163272, A318251. %K A318252 nonn,more %O A318252 1,1 %A A318252 _Amiram Eldar_, Aug 22 2018