A200150
Number of 0..4 arrays x(0..n-1) of n elements with zero n-1st difference.
Original entry on oeis.org
1, 5, 13, 41, 103, 275, 685, 2525, 5221, 13897, 32717, 176145, 321963, 1390895, 2223445, 3845743, 10539177, 76756525, 147653093, 808935605, 934179307
Offset: 1
Some solutions for n=6
..1....1....4....1....2....1....2....4....2....1....1....0....2....1....4....3
..2....0....1....1....1....2....1....0....1....4....1....2....3....4....1....2
..2....2....2....4....3....3....1....2....1....1....3....1....4....3....1....3
..2....4....2....4....3....4....1....4....2....0....4....1....3....2....2....2
..2....4....1....1....1....4....1....4....3....2....3....2....1....2....3....0
..1....1....4....1....2....1....2....4....2....1....1....0....2....1....4....3
A200151
Number of 0..5 arrays x(0..n-1) of n elements with zero n-1st difference.
Original entry on oeis.org
1, 6, 18, 66, 202, 730, 2036, 7488, 19262, 62772, 190408, 1077600, 2185196, 12081408, 21927244, 52980770, 148851716, 1353060240, 2585159746, 16942421808, 28793485330, 51092435876, 106822624510, 1565885020128
Offset: 1
Some solutions for n=6
..4....3....3....0....4....1....5....3....0....5....5....5....5....5....4....5
..4....5....3....2....4....3....3....1....1....0....3....4....1....0....0....4
..1....0....4....1....0....4....3....2....3....2....4....2....2....3....3....5
..1....0....3....1....0....3....3....2....2....4....5....1....3....4....4....5
..4....5....1....3....4....1....3....1....0....4....5....1....3....2....2....4
..4....3....3....5....4....1....5....3....5....5....5....0....5....5....4....5
A200152
Number of 0..6 arrays x(0..n-1) of n elements with zero n-1st difference.
Original entry on oeis.org
1, 7, 25, 107, 381, 1589, 5153, 18809, 68813, 256859, 883247, 4997167, 12448095, 76804553, 181129817, 522024177, 1884097881, 16163873397, 38888615377, 239811969005
Offset: 1
Some solutions for n=6
..1....1....6....5....5....3....5....0....0....0....6....2....0....4....2....5
..6....4....6....4....1....4....6....0....6....2....6....6....2....4....2....2
..2....2....5....4....2....0....3....2....3....3....4....6....0....4....2....2
..0....2....3....4....3....1....2....2....2....3....2....6....2....3....4....1
..3....4....2....4....3....6....4....0....4....3....2....6....6....2....6....0
..6....1....6....5....5....3....5....0....0....5....6....2....0....4....2....5
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