A343954 a(n) is the number of triangular faces of Johnson solid J_n.

4, 5, 4, 4, 5, 10, 4, 4, 5, 12, 15, 6, 10, 6, 8, 10, 16, 4, 4, 5, 10, 16, 20, 25, 30, 4, 8, 8, 8, 10, 10, 15, 15, 20, 8, 8, 8, 10, 10, 15, 15, 20, 20, 20, 24, 30, 35, 40, 6, 10, 14, 4, 8, 4, 8, 8, 12, 5, 10, 10, 15, 10, 5, 7, 8, 12, 16, 25, 30, 30, 35, 20, 20

Offset

1,1

Links

Table of n, a(n) for n=1..73.

Wikipedia, List of Johnson solids

Formula

a(n) <= A242731(n).

Crossrefs

Cf. A242731, A343955, A343956, A343957, A343958, A343959.

Sequence in context: A329505 A125583 A196619 * A063694 A242624 A068901

Adjacent sequences: A343951 A343952 A343953 * A343955 A343956 A343957

Keyword

nonn,fini

Author

Felix Fröhlich, May 05 2021

Status

approved