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A243041 Number of length n+3 0..5 arrays with no four elements in a row with pattern abab (with a!=b) and new values 0..5 introduced in 0..5 order 1
14, 47, 179, 759, 3516, 17463, 91409, 496910, 2773138, 15753844, 90561096, 524666847, 3055232669, 17850654182, 104522388599, 612887812613, 3597118277921, 21124711727370, 124107523783819, 729318556095320 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A243044

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 12*a(n-1) -41*a(n-2) +13*a(n-3) +96*a(n-4) +33*a(n-5) -134*a(n-6) -166*a(n-7) -33*a(n-8) +82*a(n-9) +87*a(n-10) +41*a(n-11) +10*a(n-12) +a(n-13)

EXAMPLE

Some solutions for n=4

..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

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

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

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

..0....2....1....2....1....1....2....1....2....3....3....3....2....4....0....2

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

..0....1....4....1....0....0....1....2....3....3....3....1....0....0....2....0

CROSSREFS

Sequence in context: A334830 A159450 A243040 * A243042 A243043 A013323

Adjacent sequences:  A243038 A243039 A243040 * A243042 A243043 A243044

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 29 2014

STATUS

approved

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Last modified May 8 19:28 EDT 2021. Contains 343666 sequences. (Running on oeis4.)