A011791 Number of directed animals on a certain lattice.

1, 2, 8, 35, 169, 862, 4575, 24999, 139700, 794684, 4586377, 26788423, 158054285, 940603900

Offset

0,2

Links

Table of n, a(n) for n=0..13.

S. Ramanujan, Notebook entry.

Crossrefs

Cf. A011789, A011790, A011792, A259757.

Sequence in context: A303070 A129580 A007034 * A259757 A391126 A371826

Adjacent sequences: A011788 A011789 A011790 * A011792 A011793 A011794

Keyword

nonn,more,obsc

Author

Alain Denise (Alain.Denise(AT)lri.fr)

Status

approved