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A068252
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1/24 the number of colorings of a 5 X 5 octagonal array with n colors.
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2
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15, 13544240, 138446293905, 122914516488960, 25999554922206250, 2153128175383358880, 92188903926678792030, 2420834781123276840960, 43619102772258066624945, 582825001391348708850000, 6107144216640392108077895, 52317129545418639168933120
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OFFSET
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4,1
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LINKS
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MAPLE
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a:= n-> (749775400182+ (-5612178463551+ (20061456442182+ (-45672704671212+ (74464103614803+ (-92636079268387+ (91447345270476+ (-73522860568402+ (49016457219873+ (-27440963053418+ (13013052032729+ (-5257328793792+
(1815373485182+ (-536334824998+ (135430280705+ (-29134045002+ (5309217327+ (-812594023+ (103170636+ (-10676360+ (877812+ (-55183+ (2492+(-72+n)*n) *n)*n) *n)*n) *n)*n) *n)*n) *n)*n) *n)*n) *n)*n) *n) *n) *n) *n) *n) *n) *n) *n) *n/24:
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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