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A259521
Number of (n+1)X(5+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0011 0101 or 1111
1
1204, 33162, 851604, 22453286, 589476522, 15503669216, 407656116320, 10720344908210, 281914700860322, 7413627501305340, 194959116068482708, 5126921239618282672, 134824786575257866732, 3545543860883412901370
OFFSET
1,1
COMMENTS
Column 5 of A259524
LINKS
FORMULA
Empirical: a(n) = 51*a(n-1) -805*a(n-2) +3209*a(n-3) +37453*a(n-4) -417551*a(n-5) +815341*a(n-6) +7216861*a(n-7) -40290699*a(n-8) +24318580*a(n-9) +307333858*a(n-10) -684397564*a(n-11) -709536075*a(n-12) +3625174740*a(n-13) -763760119*a(n-14) -9155414619*a(n-15) +6719109756*a(n-16) +12902695893*a(n-17) -13865362580*a(n-18) -10797221393*a(n-19) +14735900778*a(n-20) +5612692485*a(n-21) -9068116073*a(n-22) -1937157517*a(n-23) +3292107469*a(n-24) +482465491*a(n-25) -683386889*a(n-26) -85241972*a(n-27) +75921724*a(n-28) +9085136*a(n-29) -4088944*a(n-30) -500115*a(n-31) +86878*a(n-32) +11224*a(n-33) -398*a(n-34) -78*a(n-35) -2*a(n-36)
EXAMPLE
Some solutions for n=2
..1..0..0..1..1..0....1..0..0..0..0..1....0..0..0..0..0..0....0..1..0..1..1..0
..0..0..0..0..0..0....0..0..1..0..0..0....1..0..0..0..1..0....1..0..1..0..0..1
..0..1..0..0..1..0....0..0..1..0..1..0....0..1..1..1..0..0....1..0..0..0..0..0
CROSSREFS
Sequence in context: A252340 A230838 A210015 * A190031 A254694 A279983
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 29 2015
STATUS
approved