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A255710 Number of length n 1..(2+2) arrays with no leading partial sum equal to a prime and no consecutive values equal 1
2, 2, 4, 6, 8, 14, 19, 33, 69, 162, 325, 616, 1314, 2874, 6099, 11780, 21630, 42778, 95379, 225424, 532771, 1184433, 2434239, 4904932, 10213447, 21612164, 44580230, 89065496, 178617292, 373380471, 821875838, 1887456086, 4465488647 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A255716
LINKS
EXAMPLE
All solutions for n=4
..1....4....1....1....1....4
..3....2....3....3....3....2
..2....4....4....4....2....3
..3....2....1....2....4....1
CROSSREFS
Sequence in context: A145465 A291055 A266949 * A329137 A239851 A153958
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 03 2015
STATUS
approved

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)