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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.

A228945 Number of ways to write highly composite numbers (A002182(n)) as the difference of two primes, both <= 2*A002182(n).

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%I A228945 #18 Nov 03 2024 09:35:20
%S A228945 0,0,1,1,3,6,6,7,11,19,25,28,40,61,87,109,138,184,326,437,550,721,935,
%T A228945 1103,1326,1792,1903,2351,3261,4119,5773,7386,8736,10307,14404,15953,
%U A228945 18290,21480,30294,38516,54874,70132,85419,99583,142053,155243,182169,220996
%N A228945 Number of ways to write highly composite numbers (A002182(n)) as the difference of two primes, both <= 2*A002182(n).
%C A228945 Conjectures: (a) This sequence is strictly increasing beginning with n=7. (b) If p is the smallest prime with p > A002182(n)+1, then p-A002182(n) is prime. This is a strengthening of a conjecture regarding A117825.
%H A228945 Amiram Eldar, <a href="/A228945/b228945.txt">Table of n, a(n) for n = 1..84</a>
%F A228945 a(n) = A202472(A002182(n)/2) for n>1.
%e A228945 a(5) = 3, since A002182(5) = 12 = 23-11 = 19-7 = 17-5.
%Y A228945 Cf. A002182, A117825, A202472.
%K A228945 nonn
%O A228945 1,5
%A A228945 _Jaycob Coleman_, Sep 08 2013
%E A228945 More terms from _Amiram Eldar_, Nov 03 2024