Number of lower triangles of a (2n)X(2n) 0..n array with new values introduced in row major order 0..n and no element unequal to more than one horizontal or vertical neighbor.
A194780
Number of lower triangles of a (2n)X(2n) 0..n array with new values introduced in row major order 0..n and no element unequal to more than one horizontal or vertical neighbor.
Terms
- a(0) =3a(1) =17a(2) =105a(3) =672a(4) =4490a(5) =31466a(6) =231445a(7) =1784788a(8) =14404218a(9) =121421075a(10) =1066906979a(11) =9753108510a(12) =92586250999a(13) =911156724048
External references
- oeis: A194780