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 A383332 #7 Apr 26 2025 11:27:12 %S A383332 1,2,3,4,6,8,12,20,29,44,70,104 %N A383332 Smallest positive weight of a pair of nonnegative integers with a shortest vectorial addition chain of length n. %C A383332 See A383330 for details. %C A383332 The weight of a pair is the sum of its elements. %e A383332 n | a(n) | pairs (x,y) with x <= y, x+y = a(n), and shortest chain length n %e A383332 ---+------+----------------------------------------------------------------- %e A383332 0 | 1 | (0,1) %e A383332 1 | 2 | (0,2), (1,1) %e A383332 2 | 3 | (0,3), (1,2) %e A383332 3 | 4 | (1,3) %e A383332 4 | 6 | (1,5) %e A383332 5 | 8 | (1,7) %e A383332 6 | 12 | (1,11) %e A383332 7 | 20 | (1,19), (3,17) %e A383332 8 | 29 | (6,23) %e A383332 9 | 44 | (7,37) %e A383332 10 | 70 | (11,59) %e A383332 11 | 104 | (15,89) %Y A383332 Row 2 of A383334. %Y A383332 Cf. A003064, A383330, A383331. %K A383332 nonn,hard,more %O A383332 0,2 %A A383332 _Pontus von Brömssen_, Apr 26 2025