A166791 Number of nX6 1..2 arrays containing at least one of each value, all equal values connected, and rows considered as a single number in nondecreasing order.

10, 71, 586, 3809, 18932, 78101

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=4
...1.1.1.1.1.1...1.1.1.1.1.1...1.1.1.1.1.1...1.1.1.1.1.1...2.1.1.1.1.1
...1.1.1.2.1.2...1.1.2.2.2.1...1.1.1.1.1.1...2.1.2.1.1.1...2.1.1.2.2.1
...1.1.2.2.2.2...2.1.2.1.2.1...1.2.1.2.2.1...2.2.2.2.2.1...2.2.1.2.2.1
...1.1.2.2.2.2...2.2.2.1.1.1...1.2.2.2.1.1...2.2.2.2.2.1...2.2.2.2.2.2
------
...1.1.1.1.2.2...2.1.1.1.1.1...2.1.1.1.1.1...1.1.1.1.1.1...1.1.1.1.1.1
...1.1.1.1.2.2...2.1.2.1.2.2...2.2.2.1.2.2...1.1.1.1.2.1...1.2.1.1.1.1
...2.2.2.1.2.2...2.2.2.1.1.2...2.2.2.2.2.2...1.1.1.1.2.1...1.2.1.2.1.1
...2.2.2.2.2.2...2.2.2.2.2.2...2.2.2.2.2.2...1.1.1.2.2.1...1.2.2.2.1.1

Crossrefs

Sequence in context: A049672 A221548 A037579 * A271035 A108276 A264159

Adjacent sequences: A166788 A166789 A166790 * A166792 A166793 A166794

Keyword

nonn

Author

R. H. Hardin Oct 21 2009

Status

approved