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A253312 Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally 1
1051870, 1053094, 8858020, 6728458, 53883500, 45899840, 352580820, 411726542, 2447644466, 4549989670, 21236471054, 58678596194, 237413653504, 831549840050, 3188655033276, 12424082609832, 47046111414124, 191305947190332 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A253314
LINKS
FORMULA
Empirical: a(n) = 54*a(n-2) -1146*a(n-4) +11906*a(n-6) -57856*a(n-8) +41746*a(n-10) +915500*a(n-12) -5390084*a(n-14) +17243019*a(n-16) -23781910*a(n-18) -46626062*a(n-20) +220685238*a(n-22) -966711598*a(n-24) +5598015330*a(n-26) -16564562748*a(n-28) +32437880460*a(n-30) -82319238900*a(n-32) +196803047412*a(n-34) -299792408688*a(n-36) +416972982600*a(n-38) -699879086064*a(n-40) +808469304768*a(n-42) -550998028800*a(n-44) +537665236992*a(n-46) -589908013056*a(n-48) +235092492288*a(n-50) for n>64
EXAMPLE
Some solutions for n=1
..0..1..0..1..2..1..0....0..0..0..1..1..2..1....0..0..0..2..0..0..2
..1..2..2..0..1..2..1....2..1..1..2..2..0..0....2..1..1..1..1..0..2
CROSSREFS
Sequence in context: A013968 A036098 A203668 * A253660 A253730 A043679
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 30 2014
STATUS
approved

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Last modified March 19 02:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)