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A254215 Number of length n 1..(5+2) arrays with no leading or trailing partial sum equal to a prime and no consecutive values equal. 0
3, 2, 12, 24, 70, 192, 633, 2484, 10554, 35054, 102520, 337948, 1366804, 6000028, 24951622, 94266262, 337342046, 1263530794, 5269371063, 23209051416, 98571237345, 383041820280, 1353435250769, 4542413798878, 16490190511798, 76615460665948, 434914649543770 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..27.

EXAMPLE

Some solutions for n=4:

..6....6....6....4....4....1....4....1....4....4....4....4....1....6....1....6

..2....2....4....6....6....5....5....5....2....2....6....2....3....4....5....4

..6....7....2....4....2....3....3....6....4....6....2....3....2....6....4....2

..4....1....4....6....4....1....6....4....6....4....6....1....4....4....6....6

CROSSREFS

Column k=5 of A254218.

Sequence in context: A136657 A006774 A086551 * A007214 A189736 A025232

Adjacent sequences:  A254212 A254213 A254214 * A254216 A254217 A254218

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 26 2015

EXTENSIONS

a(23)-a(27) from Alois P. Heinz, Jan 27 2015

STATUS

approved

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Last modified October 22 22:34 EDT 2019. Contains 328335 sequences. (Running on oeis4.)