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 A384737 #16 Aug 04 2025 10:13:32 %S A384737 0,0,1,27,195,527,1487,2711,5648,8694,15163,21398,33514,44411,64990, %T A384737 82431,114337,140958,187742,225716,292010,344238,434025,504464,622802, %U A384737 714278,867664,984013,1177505,1324222,1564296,1744637,2039877,2258715,2615027,2879412,3304797 %N A384737 a(n) is the number of distinct five-cuboid combinations filling an n X n X n cube only with at least one cut spanning through the full cube. %C A384737 Alternatively a(n) is the number of distinct five-triplet sets produced by A(n)-D(n); that is, a(n) = |A(n)-D(n)|, where the sequences of sets A(n), B(n) and C(n) are introduced in A384479 and D(n) = B(n) U C(n). %H A384737 Janaka Rodrigo, <a href="/A384737/a384737.pdf">Sets of A(n)-D(n) in Triplets Form</a> %e A384737 A(3) = {{(1,1,2), (1,1,3), (1,2,2), (1,2,3), (2,2,3)}, {(1,1,1), (1,1,2), (1,1,3), (1,3,3), (2,2,3)}}. %e A384737 B(3) = {{(1,1,2), (1,1,3), (1,2,2), (1,2,3), (2,2,3)}}. %e A384737 C(3) = {}. %e A384737 D(3) = B(3) U C(3) = {{(1,1,2), (1,1,3), (1,2,2), (1,2,3), (2,2,3)}}. %e A384737 A(3)-D(3) = {{(1,1,1), (1,1,2), (1,1,3), (1,3,3), (2,2,3)}}. %e A384737 Therefore, a(3) = 1. %Y A384737 Cf. A381847, A384208, A384311, A384479, A384743. %K A384737 nonn %O A384737 1,4 %A A384737 _Janaka Rodrigo_, Jun 08 2025 %E A384737 a(11)-a(37) from _Jinyuan Wang_, Aug 04 2025