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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

%I #5 Mar 31 2012 12:36:22

%S 1,7,3,43,17,6,268,105,41,12,1740,672,265,95,23,11862,4490,1736,655,

%T 219,43,85013,31466,11857,4464,1641,493,79,639760,231445,85007,31429,

%U 11686,4069,1101,143,5045610,1784788,639753,231395,84727,30608,10121,2427,256

%N 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

%C Table starts

%C ...1....7....43....268....1740....11862.....85013.....639760....5045610

%C ...3...17...105....672....4490....31466....231445....1784788...14404218

%C ...6...41...265...1736...11857....85007....639753....5045602...41615156

%C ..12...95...655...4464...31429...231395...1784723...14404136..121420974

%C ..23..219..1641..11686...84727...639325...5044981...41614291..358184223

%C ..43..493..4069..30608..229869..1782111..14399939..121414559.1066897441

%C ..79.1101.10121..80961..631373..5029741..41587186..358138793.3210593393

%C .143.2427.25025.214469.1745459.14321783.121261490.1066617315

%H R. H. Hardin, <a href="/A194778/b194778.txt">Table of n, a(n) for n = 1..120</a>

%e Some solutions for n=2 k=2

%e ..0........0........0........0........0........0........0........0

%e ..0.0......0.0......1.1......1.1......0.0......1.1......0.1......0.0

%e ..1.1.1....0.0.1....1.1.2....1.1.1....0.0.0....1.1.1....0.1.1....0.0.0

%e ..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

%Y Column 1 is A055244

%K nonn,tabl

%O 1,2

%A _R. H. Hardin_ Sep 02 2011

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Last modified August 10 16:53 EDT 2024. Contains 375058 sequences. (Running on oeis4.)