The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A229578 T(n,k) = number of defective 4-colorings of an n X k 0..3 array connected horizontally, vertically, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..3 order. 8
 0, 1, 1, 2, 6, 2, 6, 26, 26, 6, 20, 80, 76, 80, 20, 70, 216, 171, 171, 216, 70, 246, 544, 362, 312, 362, 544, 246, 854, 1312, 757, 568, 568, 757, 1312, 854, 2920, 3072, 1584, 1064, 924, 1064, 1584, 3072, 2920, 9846, 7040, 3323, 2064, 1576, 1576, 2064, 3323, 7040 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 COMMENTS Table starts ....0.....1.....2.....6....20....70...246...854..2920..9846..32810.108262 ....1.....6....26....80...216...544..1312..3072..7040.15872..35328..77824 ....2....26....76...171...362...757..1584..3323..6982.14673..30812..64615 ....6....80...171...312...568..1064..2064..4120..8384.17256..35728..74168 ...20...216...362...568...924..1576..2852..5440.10780.21880..45012..93232 ...70...544...757..1064..1576..2440..4048..7224.13696.27080..54928.112984 ..246..1312..1584..2064..2852..4048..6108..9992.17716.33504..66188.134200 ..854..3072..3323..4120..5440..7224..9992.14840.24072.42520..80296.158520 .2920..7040..6982..8384.10780.13696.17716.24072.35356.57008.100420.189400 .9846.15872.14673.17256.21880.27080.33504.42520.57008.83016.133216.234104 LINKS R. H. Hardin, Table of n, a(n) for n = 1..919 FORMULA Empirical for column k: k=1: a(n) = 8*a(n-1) - 22*a(n-2) + 24*a(n-3) - 9*a(n-4) for n > 6. k=2: a(n) = 4*a(n-1) - 4*a(n-2) for n > 3. k=3: a(n) = 6*a(n-1) - 13*a(n-2) + 12*a(n-3) - 4*a(n-4) for n > 5. k=4: a(n) = 6*a(n-1) - 13*a(n-2) + 12*a(n-3) - 4*a(n-4) for n > 7. k=5: a(n) = 6*a(n-1) - 13*a(n-2) + 12*a(n-3) - 4*a(n-4) for n > 7. k=6: a(n) = 6*a(n-1) - 13*a(n-2) + 12*a(n-3) - 4*a(n-4) for n > 7. k=7: a(n) = 6*a(n-1) - 13*a(n-2) + 12*a(n-3) - 4*a(n-4) for n > 7. EXAMPLE Some solutions for n=3, k=4: 0 1 2 3 0 1 0 1 0 1 0 2 0 1 0 1 0 1 0 1 2 1 0 1 2 3 2 3 3 2 3 1 2 3 2 3 2 3 2 3 0 3 2 3 0 1 0 3 1 0 3 2 0 3 1 0 0 0 1 0 CROSSREFS Column 1 is A229472. Sequence in context: A241040 A151705 A170861 * A078992 A062321 A229479 Adjacent sequences: A229575 A229576 A229577 * A229579 A229580 A229581 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Sep 26 2013 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 21 16:33 EDT 2023. Contains 361408 sequences. (Running on oeis4.)