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A055323
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Number of labeled trees with n nodes and 11 leaves.
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1
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12, 159588, 188972784, 82965682800, 21005730345600, 3748679961586560, 526390865228067840, 62217055603837854720, 6471318681640036224000, 610909570703009305728000, 53525038934303849706393600
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OFFSET
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12,1
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LINKS
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FORMULA
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a(n) = n! * (n-11)^2*(n-10)^2*(n-9)*(n-8)*(n-7)*(n-6)*(n-5)*(n-4)*(n-3)*(n-2)*(15*n^6 - 825*n^5 + 18615*n^4 - 220127*n^3 + 1435578*n^2 - 4882792*n + 6746112) / 111244864389120000. - Vaclav Kotesovec, Jul 25 2014
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MATHEMATICA
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Table[n! * (n-11)^2*(n-10)^2*(n-9)*(n-8)*(n-7)*(n-6)*(n-5)*(n-4)*(n-3)*(n-2)*(15*n^6 - 825*n^5 + 18615*n^4 - 220127*n^3 + 1435578*n^2 - 4882792*n + 6746112) / 111244864389120000, {n, 12, 25}] (* Vaclav Kotesovec, Jul 25 2014 *)
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PROG
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(Magma) [Factorial(n)*(n-11)^2*(n-10)^2*(n-9)*(n-8)*(n-7)*(n-6)*(n-5)*(n-4)*(n-3)*(n-2)*(15*n^6 - 825*n^5 + 18615*n^4 - 220127*n^3 + 1435578*n^2 - 4882792*n + 6746112) / 111244864389120000: n in [12..25]]; Vincenzo Librandi, Jul 25 2014
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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