login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A253032
Number of (n+2)X(4+2) 0..2 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order
1
50571, 802899, 12647772, 199953846, 3170197872, 50259172356, 797070583521, 12643671566241, 200567370213594, 3181733456490459, 50474910281438925, 800736037603303626, 12702959834316206535, 201521446271002086849
OFFSET
1,1
COMMENTS
Column 4 of A253035
FORMULA
Empirical recurrence of order 72 (see link above)
EXAMPLE
Some solutions for n=1
..0..1..1..0..1..1....0..0..1..1..0..1....0..1..0..0..1..1....0..0..1..1..2..2
..0..2..2..1..2..1....0..2..2..1..1..2....2..0..2..2..1..1....1..0..1..1..0..1
..1..2..2..0..2..2....1..2..2..0..0..1....0..0..2..2..0..2....1..1..2..2..0..2
CROSSREFS
Sequence in context: A029823 A302902 A317285 * A251486 A376929 A268469
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 26 2014
STATUS
approved