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 A306417 #5 Feb 14 2019 20:22:12
%S A306417 1,1,0,1,1,2,7,7,46,39,321
%N A306417 Number of self-conjugate set partitions of {1, ..., n}.
%C A306417 This sequence counts set partitions fixed under Callan's conjugation operation.
%H A306417 David Callan, <a href="https://arxiv.org/abs/math/0508052">On conjugates for set partitions and integer compositions</a>, arXiv:math/0508052 [math.CO], 2005.
%e A306417 The a(3) = 1 through a(7) = 7 self-conjugate set partitions:
%e A306417 {{12}{3}} {{13}{24}} {{123}{4}{5}} {{135}{246}} {{13}{246}{57}}
%e A306417 {{13}{2}{45}} {{124}{35}{6}} {{15}{246}{37}}
%e A306417 {{13}{25}{46}} {{1234}{5}{6}{7}}
%e A306417 {{14}{2}{356}} {{124}{3}{56}{7}}
%e A306417 {{14}{236}{5}} {{134}{2}{5}{67}}
%e A306417 {{14}{25}{36}} {{14}{2}{3}{567}}
%e A306417 {{145}{26}{3}} {{14}{23}{57}{6}}
%Y A306417 Cf. A000110, A000126, A000296, A001610, A032032, A052841, A080107, A169985, A306416, A324011, A324012.
%K A306417 nonn,more
%O A306417 0,6
%A A306417 _Gus Wiseman_, Feb 14 2019