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 A307149 #22 Dec 18 2023 08:26:06 %S A307149 0,0,0,1,0,2,1,3,1,5,3,7,4,10,7,12,8,17,13,21,16,28,23,32,27,42,37,48, %T A307149 44,60,56,66,64,83,81,93,94,114,115,124,131,152,159,166,182,198,214, %U A307149 212,241,254,283,274,320,322,368,342,412,402,472,428,528,494 %N A307149 Number of binary partitions of n in which exactly two of the powers of 2 are used an odd number of times. %H A307149 Vaclav Kotesovec, <a href="/A307149/b307149.txt">Table of n, a(n) for n = 0..10000</a> %H A307149 George E. Andrews and Jim Lawrence, <a href="https://georgeandrews1.github.io/pdf/321.pdf">Binary partitions and binary partition polytopes</a>, preprint. %H A307149 George E. Andrews and Jim Lawrence, <a href="https://doi.org/10.1007/s00010-017-0493-8">Binary partitions and binary partition polytopes</a>, Aequationes mathematicae 91.5 (2017): 859-869. %t A307149 Clear[L]; L[m_, n_] := L[m, n] = If[n == 0, If[m == 0, 1, 0], If[EvenQ[n] && n >= 2, L[m, n - 2] + L[m, n/2], If[m >= 1, L[m - 1, n - 1], 0]]]; Table[L[2, n], {n, 0, 100}] (* _Vaclav Kotesovec_, Mar 29 2019 *) %Y A307149 Cf. A000123, A307148. %K A307149 nonn %O A307149 0,6 %A A307149 _N. J. A. Sloane_, Mar 28 2019 %E A307149 More terms from _Vaclav Kotesovec_, Mar 29 2019