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 A362026 #43 May 02 2023 14:42:16 %S A362026 3,7,3,5,20,3,12,3,3,14,3,3,3,3,3,3,23,3,23,3,261,6,12 %N A362026 Smallest unhappy number in base A161874(n). %C A362026 This sequence is the list of least unhappy numbers (A161872) with all terms < 3 removed. %H A362026 Lucas A. Brown, <a href="https://github.com/lucasaugustus/oeis/blob/main/A161874.c">C program</a>. %F A362026 a(n) = A161872(A161874(n)). %e A362026 The first term in this sequence corresponds to base 16. In base 16, 2 is happy because the sequence it generates is 2 -> 4 -> (1,0) -> 1, while 3 is unhappy because the sequence it generates is 3 -> 9 -> (5,1) -> (1,10) -> (6,5) -> (3,13) -> (11,2) -> (7,13) -> (13,10) -> (1,0,13) -> (10,10) -> (12,8) -> (13,0) -> (10,9) -> (11,5) -> (9,2) -> (5,5) -> (3,2) -> (0,13) -> (10,9) -> ..., which repeats with period 6. %Y A362026 Cf. A031177, A161872, A161874. %K A362026 nonn,base,more %O A362026 1,1 %A A362026 _Lucas A. Brown_, Apr 26 2023