A163021 Number of n X 4 binary arrays with all 1's connected and a path of 1's from left column to lower right corner.

1, 29, 416, 4776, 50720, 522982, 5323854, 53861817, 543240561, 5470511797, 55045873418, 553670627178, 5567917242290, 55987505409573, 562947468953116, 5660225918946978, 56910735678528024, 572205314886589089

Offset

1,2

Links

R. H. Hardin, Table of n, a(n) for n=1..44

Crossrefs

Sequence in context: A174885 A264160 A210302 * A125464 A161572 A161972

Adjacent sequences: A163018 A163019 A163020 * A163022 A163023 A163024

Keyword

nonn

Author

R. H. Hardin, Jul 20 2009

Status

approved