A189331 Number of nondecreasing arrangements of 8 numbers in 0..n with the last equal to n and each after the second equal to the sum of one or two of the preceding four

2, 14, 28, 70, 84, 179, 157, 321, 283, 461, 390, 720, 482, 784, 747, 988, 684, 1299, 796, 1371, 1121, 1395, 973, 2066, 1061, 1707, 1531, 2058, 1207, 2624, 1282, 2386, 1968, 2303, 1599, 3439, 1482, 2615, 2372, 3304, 1705, 3744, 1798, 3430, 2993, 3157, 1975

Offset

1,1

Comments

Row 6 of A189326

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for n=3
..0....0....1....1....0....1....1....1....2....1....0....1....3....0....0....1
..1....3....1....1....1....3....1....1....3....1....1....1....3....1....1....1
..1....3....1....1....1....3....1....2....3....1....1....1....3....1....1....1
..1....3....1....2....2....3....2....3....3....1....2....1....3....1....1....1
..2....3....2....2....3....3....3....3....3....1....2....1....3....1....1....1
..3....3....3....2....3....3....3....3....3....1....2....2....3....2....1....2
..3....3....3....3....3....3....3....3....3....2....3....3....3....3....2....2
..3....3....3....3....3....3....3....3....3....3....3....3....3....3....3....3

Crossrefs

Sequence in context: A355864 A200039 A281206 * A157023 A101554 A057018

Adjacent sequences: A189328 A189329 A189330 * A189332 A189333 A189334

Keyword

nonn

Author

R. H. Hardin Apr 20 2011

Status

approved