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A251430 Number of length 3+2 0..n arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero 1
12, 97, 380, 1113, 2532, 5097, 9120, 15449, 24344, 36877, 53400, 75541, 103332, 138857, 182012, 235645, 299348, 376229, 465720, 572073, 693956, 836041, 996988, 1182653, 1390604, 1627337, 1890212, 2187213, 2514672, 2880669, 3281476, 3727513 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A251428

LINKS

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

FORMULA

Empirical: a(n) = -2*a(n-1) -4*a(n-2) -5*a(n-3) -5*a(n-4) -2*a(n-5) +3*a(n-6) +10*a(n-7) +17*a(n-8) +21*a(n-9) +21*a(n-10) +14*a(n-11) +3*a(n-12) -13*a(n-13) -27*a(n-14) -38*a(n-15) -40*a(n-16) -34*a(n-17) -19*a(n-18) +19*a(n-20) +34*a(n-21) +40*a(n-22) +38*a(n-23) +27*a(n-24) +13*a(n-25) -3*a(n-26) -14*a(n-27) -21*a(n-28) -21*a(n-29) -17*a(n-30) -10*a(n-31) -3*a(n-32) +2*a(n-33) +5*a(n-34) +5*a(n-35) +4*a(n-36) +2*a(n-37) +a(n-38)

EXAMPLE

Some solutions for n=10

.10....6....6....1...10....6...10....6....6....8....0....5....6....2....1....8

..4....8....7....0....6....2....6....4....5....4....8....9...10....6....5....6

..6....5....9....1....7....5....6....7....2....5....5....1....3....5....4....8

.10....9....7....9....0....4....4....9....3....2...10....2....9....9....2....4

..2....4...10....2....5....0...10....8....2....5....3....9....4....9....9....7

CROSSREFS

Sequence in context: A219438 A219139 A059375 * A027255 A121791 A016753

Adjacent sequences:  A251427 A251428 A251429 * A251431 A251432 A251433

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 02 2014

STATUS

approved

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Last modified July 1 03:30 EDT 2022. Contains 354947 sequences. (Running on oeis4.)