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 A114623 #28 Apr 30 2024 11:40:56 %S A114623 1,1,2,3,5,9,15,26,43,78,134,238,415,731,1299,2299,4126,7374,13257, %T A114623 23847,42864,77366,140071,254241,461967,839829,1528072,2782636, %U A114623 5076421,9274937,16973162,31101087,57016626,104600473,191919113,352396874,647655110 %N A114623 Number of nodes in row n of the power tree A114622. %C A114623 Terms computed by Hugo Pfoertner; see entry A114622 for definition, references and links. %Y A114623 Cf. A114622 (power tree), A114624 (row sums), A114625 (leftmost nodes in rows). %K A114623 nonn,hard,more %O A114623 1,3 %A A114623 _Hugo Pfoertner_ and _Paul D. Hanna_, Dec 20 2005 %E A114623 a(32)-a(33) from _Hugo Pfoertner_, Sep 05 2015 %E A114623 a(34) from _Hugo Pfoertner_, Oct 01 2015 %E A114623 a(35)-a(37) from _Michael S. Branicky_, Apr 30 2024