Number of fixed polyaboloes (or polytans) with n cells, where two triangles sharing a hypotenuse (making up a square) are counted as a single cell.
A390998
Number of fixed polyaboloes (or polytans) with n cells, where two triangles sharing a hypotenuse (making up a square) are counted as a single cell.
Terms
- a(0) =5a(1) =18a(2) =90a(3) =510a(4) =3087a(5) =19424a(6) =125442a(7) =826622a(8) =5532723a(9) =37492330a(10) =256611656a(11) =1770847429a(12) =12304993349a(13) =86006708200
External references
- oeis: A390998