login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

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

%I #4 May 09 2021 10:08:49

%S 0,1,0,0,1,6,0,0,1,0,1,0,0,0,0,0,0,0,0,1,6,0,0,1,6,0,0,0,0,2,2,7,7,12,

%T 0,0,0,2,2,7,7,12,12,0,0,2,7,12,0,0,0,2,2,0,0,0,0,11,10,10,9,2,3,3,0,

%U 0,0,1,2,2,3,12,12,12,12,11,11,11,11,10,10

%N a(n) is the number of pentagonal 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, A343955, A343957, A343958, A343959.

%K nonn,fini

%O 1,6

%A _Felix Fröhlich_, May 05 2021