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 A115617 #26 Apr 24 2025 08:54:03 %S A115617 1,2,3,5,7,11,19,29,47,71,127,191,319,551,1007,1711,2687,4703,8447, %T A115617 15179,28079,45997,89599,138959,257513,485657,834557,1433501,2854189, %U A115617 4726127,8814047,15692153,30078877,53574623,94189807,177848059,322928189 %N A115617 Smallest number for which Knuth's power tree method produces an addition chain of length n. %C A115617 Minimum number in row of power tree A114622. The first 12 terms are identical with A003064. %C A115617 Smallest k such that A383329(k) = n. - _Pontus von Brömssen_, Apr 24 2025 %Y A115617 Cf. A114622 (the power tree (as defined by Knuth)), A003064 (smallest number with addition chain of length n), A113945 (numbers such that Knuth's power tree method produces a result deficient by 1). %Y A115617 Indices of records in A383329. %K A115617 nonn,more %O A115617 0,2 %A A115617 _Hugo Pfoertner_, Jan 29 2006 %E A115617 a(28)-a(32) from _Hugo Pfoertner_, Sep 05 2015 %E A115617 a(33) from _Hugo Pfoertner_, Oct 01 2015 %E A115617 a(34)-a(36) from _Michael S. Branicky_, Apr 30 2024 %E A115617 a(0) from _Pontus von Brömssen_, Apr 24 2025