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A199034 Number of nX1 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors 2
0, 0, 0, 0, 0, 1, 3, 3, 1, 6, 15, 15, 75, 126, 71, 397, 786, 550, 3043, 5730, 3660, 20610, 39843, 26407, 149468, 288070, 188649, 1074387, 2082753, 1372608, 7852896, 15252825, 10045040, 57692788, 112347998, 74107005, 427035846, 833163180 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,7
COMMENTS
Column 1 of A199041
LINKS
EXAMPLE
All solutions for n=7
..0....0....0
..0....0....0
..1....1....0
..1....1....1
..2....1....1
..2....2....2
..2....2....2
CROSSREFS
Sequence in context: A001498 A240439 A243211 * A138464 A117279 A234251
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 02 2011
STATUS
approved

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Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)