login
a(n) is the number of square faces of Johnson solid J_n.
5

%I #4 May 09 2021 10:08:38

%S 1,0,3,5,5,0,3,5,5,1,0,0,0,3,4,5,0,9,13,15,10,3,5,5,0,4,6,10,10,10,10,

%T 5,5,0,12,12,18,20,20,15,15,10,10,6,10,10,5,0,2,1,0,4,3,5,4,4,3,0,0,0,

%U 0,0,0,0,3,5,10,5,10,10,15,30,30,30,30,25,25

%N a(n) is the number of square faces of Johnson solid J_n.

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/List_of_Johnson_solids">List of Johnson solids</a>

%F a(n) < A242731(n).

%Y Cf. A242731, A343954, A343956, A343957, A343958, A343959.

%K nonn,fini

%O 1,3

%A _Felix Fröhlich_, May 05 2021