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A194778 T(n,k)=Number of lower triangles of an (n+2k-2)X(n+2k-2) 0..k array with new values introduced in row major order 0..k and no element unequal to more than one horizontal or vertical neighbor 14
1, 7, 3, 43, 17, 6, 268, 105, 41, 12, 1740, 672, 265, 95, 23, 11862, 4490, 1736, 655, 219, 43, 85013, 31466, 11857, 4464, 1641, 493, 79, 639760, 231445, 85007, 31429, 11686, 4069, 1101, 143, 5045610, 1784788, 639753, 231395, 84727, 30608, 10121, 2427, 256 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Table starts
...1....7....43....268....1740....11862.....85013.....639760....5045610
...3...17...105....672....4490....31466....231445....1784788...14404218
...6...41...265...1736...11857....85007....639753....5045602...41615156
..12...95...655...4464...31429...231395...1784723...14404136..121420974
..23..219..1641..11686...84727...639325...5044981...41614291..358184223
..43..493..4069..30608..229869..1782111..14399939..121414559.1066897441
..79.1101.10121..80961..631373..5029741..41587186..358138793.3210593393
.143.2427.25025.214469.1745459.14321783.121261490.1066617315
LINKS
EXAMPLE
Some solutions for n=2 k=2
..0........0........0........0........0........0........0........0
..0.0......0.0......1.1......1.1......0.0......1.1......0.1......0.0
..1.1.1....0.0.1....1.1.2....1.1.1....0.0.0....1.1.1....0.1.1....0.0.0
..1.1.1.0..0.0.1.1..1.1.2.2..0.0.0.0..0.0.0.1..2.2.2.2..0.1.1.0..1.1.1.1
CROSSREFS
Column 1 is A055244
Sequence in context: A272419 A272156 A271815 * A272010 A145758 A038269
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Sep 02 2011
STATUS
approved

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Last modified July 19 03:15 EDT 2024. Contains 374388 sequences. (Running on oeis4.)