A343957 a(n) is the number of hexagonal faces of Johnson solid J_n.

0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1

Offset

1,54

Links

Table of n, a(n) for n=1..92.

Eric Weisstein's World of Mathematics, Johnson Solid.

Wikipedia, List of Johnson solids.

Formula

a(n) < A242731(n).

Mathematica

Array[Count[Map[Length, PolyhedronData["J" <> ToString[#], "FaceIndices"]], 6] &, 92] (* Paolo Xausa, Apr 16 2026 *)

Crossrefs

Cf. A242731, A343954, A343955, A343956, A343958, A343959.

Essentially column k = 6 of A394912.

Sequence in context: A295854 A113933 A230630 * A338505 A037867 A122879

Adjacent sequences: A343954 A343955 A343956 * A343958 A343959 A343960

Keyword

nonn,fini,full

Author

Felix Fröhlich, May 05 2021

Extensions

a(88)-a(92) from Pontus von Brömssen, May 27 2025

Status

approved