A030138 Number of one-sided triangular n-ominoes (or triominoes) on the icosahedron.

1, 1, 1, 4, 6, 14, 26, 58, 109, 225, 359, 532, 549, 433, 214, 89, 20, 6, 1, 1

Offset

1,4

References

Daniel Johnson-Chyzhykov, G Menon, The Building Game: From Enumerative Combinatorics to Conformational Diffusion

Links

Table of n, a(n) for n=1..20.

Crossrefs

Cf. A030137.

Sequence in context: A306742 A188576 A084214 * A369684 A009849 A303041

Adjacent sequences: A030135 A030136 A030137 * A030139 A030140 A030141

Keyword

nonn,fini,full

Author

David W. Wilson

Status

approved