A317967 Number of connected line structures or "topoglyphs" with n regions.

1, 1, 4, 23, 186

Offset

0,3

Comments

The precise definition is hard to understand from the article. But Marcel Golay was a famous scientist, and this article seems to have been overlooked, so the sequences are worth placing on record.

References

Marcel J. E. Golay, Topoglyphs, IEEE Trans. Computers, C-27 (No. 2, Feb. 1978), 164-167.

Links

Table of n, a(n) for n=0..4.

N. J. A. Sloane, Annotated scan of the Golay article

Crossrefs

Cf. A317968.

A250001 is a similar sequence.

Sequence in context: A192840 A302189 A292971 * A186117 A108953 A369140

Adjacent sequences: A317964 A317965 A317966 * A317968 A317969 A317970

Keyword

nonn,more

Author

N. J. A. Sloane, Aug 27 2018

Status

approved