A390997 Number of one-sided polyaboloes (or polytans) with n cells, where two triangles sharing a hypotenuse (making up a square) are counted as a single cell.

2, 6, 24, 137, 783, 4909, 31422, 207006, 1383591, 9375415

Offset

1,1

Comments

See A390996 for illustrations.

Links

Table of n, a(n) for n=1..10.

Crossrefs

Cf. A151519, A390994, A390996 (free), A390998 (fixed), A391000.

Sequence in context: A343482 A216779 A129101 * A292907 A216507 A366459

Adjacent sequences: A390994 A390995 A390996 * A390998 A390999 A391000

Keyword

nonn,more

Author

Pontus von Brömssen, Nov 27 2025

Status

approved