A216941 Number of side-5 hexagonal 0..n arrays with values nondecreasing E, SW and SE

1256, 618013, 161114424, 25604764159, 2711219461532, 203889639856012, 11433160307353408, 496806510016872628, 17257106038907215436, 491612998466197322739, 11733465162246532370936, 238892822839943208134857

Offset

1,1

Comments

Row 5 of A216937

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

Some solutions for n=1
..........0.0.0.1.1..................0.0.0.0.0
.........0.0.1.1.1.1................0.0.0.0.0.0
........0.0.1.1.1.1.1..............0.0.0.0.0.0.0
.......0.1.1.1.1.1.1.1............0.0.0.0.0.0.1.1
......1.1.1.1.1.1.1.1.1..........0.0.0.0.0.0.1.1.1
.......1.1.1.1.1.1.1.1............0.0.0.0.0.1.1.1
........1.1.1.1.1.1.1..............0.0.0.1.1.1.1
.........1.1.1.1.1.1................0.1.1.1.1.1
..........1.1.1.1.1..................1.1.1.1.1

Crossrefs

Sequence in context: A219993 A237562 A304829 * A159726 A048130 A256652

Adjacent sequences: A216938 A216939 A216940 * A216942 A216943 A216944

Keyword

nonn

Author

R. H. Hardin Sep 20 2012

Status

approved