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A268421
Number of nX4 0..3 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.
1
12, 2191, 494098, 92967597, 15615613747, 2414369699870, 350815694801710, 48579100267639483, 6474432977080854160, 836528598526349043093, 105356335957177414141417, 12989039321265021304747296
OFFSET
1,1
COMMENTS
Column 4 of A268423.
LINKS
EXAMPLE
Some solutions for n=2
..0..1..0..2....0..0..1..2....0..1..2..2....0..1..0..2....0..0..1..2
..3..3..1..0....0..2..2..1....1..3..3..1....3..0..0..1....3..0..0..3
CROSSREFS
Cf. A268423.
Sequence in context: A205157 A268071 A205306 * A129206 A135398 A203426
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 04 2016
STATUS
approved