Number of arrangements of particles with no nearest neighbors on a double wedge shaped lattice of height n as shown in the example.

A224323

Number of arrangements of particles with no nearest neighbors on a double wedge shaped lattice of height n as shown in the example.

Terms

    a(0) =1a(1) =2a(2) =9a(3) =91a(4) =2076a(5) =106941a(6) =12443305a(7) =3270757032

External references