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A189320 Number of nondecreasing arrangements of n+2 numbers in 0..3 with the last equal to 3 and each after the second equal to the sum of one or two of the preceding four 2
5, 7, 11, 16, 22, 28, 34, 40, 46, 52, 58, 64, 70, 76, 82, 88, 94, 100, 106, 112, 118, 124, 130, 136, 142, 148, 154, 160, 166, 172, 178, 184, 190, 196, 202, 208, 214, 220, 226, 232, 238, 244, 250, 256, 262, 268, 274, 280, 286, 292, 298, 304, 310, 316, 322, 328, 334, 340 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A189326

LINKS

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

FORMULA

Empirical: a(n) = 6*n - 8 for n>3

EXAMPLE

All solutions for n=4

..2....1....1....1....0....0....3....1....0....1....1....1....0....1....1....1

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

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

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

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

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

CROSSREFS

Sequence in context: A072058 A072055 A314300 * A107448 A147853 A111226

Adjacent sequences:  A189317 A189318 A189319 * A189321 A189322 A189323

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 20 2011

STATUS

approved

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Last modified December 14 22:42 EST 2019. Contains 329987 sequences. (Running on oeis4.)