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 A285104 #10 Mar 07 2024 16:28:17 %S A285104 0,0,0,2,10,20,52,112,234,484,992,2018,4060,8140,16336,32706,65474, %T A285104 131004,262056,524184,1048460,2097044,4194176,8388480,16777084, %U A285104 33554264,67108704,134217560,268435256,536870708,1073741584,2147483416,4294967054,8589934308,17179868884,34359738044,68719476404,137438953124,274877906592,549755813536 %N A285104 a(n) = 2^n - A285103(n). %H A285104 Alois P. Heinz, <a href="/A285104/b285104.txt">Table of n, a(n) for n = 0..1000</a> (first 257 terms from Antti Karttunen) %F A285104 a(n) = 2^n - A285103(n). %o A285104 (Scheme) (define (A285104 n) (- (A000079 n) (A285103 n))) %Y A285104 Cf. A000079, A053632, A285101, A285102, A285103. %K A285104 nonn %O A285104 0,4 %A A285104 _Antti Karttunen_, Apr 15 2017