A189332 - OEIS

A189332

Number of nondecreasing arrangements of 9 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, 16, 34, 94, 119, 275, 253, 548, 477, 845, 725, 1375, 951, 1608, 1522, 2126, 1511, 2758, 1809, 3130, 2557, 3125, 2312, 4710, 2551, 3930, 3502, 4942, 2922, 6053, 3105, 5798, 4483, 5381, 4049, 8173, 3634, 6207, 5339, 8368, 4204, 8795, 4353, 8395, 7148

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Row 7 of A189326

LINKS

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

EXAMPLE

Some solutions for n=3

..0....0....1....0....1....1....1....0....1....1....0....1....1....0....1....1

..1....1....1....1....1....1....1....1....1....1....3....1....3....1....1....1

..1....1....1....1....1....1....1....1....1....2....3....1....3....1....1....2

..1....1....1....2....1....2....1....1....1....2....3....1....3....1....2....3

..1....1....2....2....1....2....1....1....1....2....3....1....3....2....3....3

..1....1....2....2....2....2....2....2....2....3....3....1....3....2....3....3

..2....1....3....3....2....3....2....3....3....3....3....2....3....2....3....3

..2....2....3....3....2....3....3....3....3....3....3....2....3....3....3....3

..3....3....3....3....3....3....3....3....3....3....3....3....3....3....3....3

CROSSREFS

Sequence in context: A012696 A012392 A009819 * A230937 A018951 A019064

Adjacent sequences: A189329 A189330 A189331 * A189333 A189334 A189335

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 20 2011

STATUS

approved