

A290868


a(n) is the number of fixed tree polycubes of size n that are proper in n5 dimensions.


0



0, 1, 568, 116004, 15998985, 1839569920, 194498568156, 19903875199488, 2028587719434848, 209368404017676288, 22100537701746000000, 2400300773277150740480, 269182253907724040230656, 31234215889947671471849472, 3753858472917234012947022848, 467486957946431078400000000000
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OFFSET

5,3


COMMENTS

Denoted DT(n,n5).


LINKS



FORMULA

a(n) = 2^(n9)*n^(n11)*(n5)*(240*n^11  6480*n^10 + 73640*n^9  461232*n^8 + 1778615*n^7  4707195*n^6 + 11632070*n^5  41919528*n^4 + 158857920*n^3  483329520*n^2 + 1481660640*n  2863123200)/360. (proved)


CROSSREFS

A290738 gives the total number of fixed ncell polycubes (not necessarily trees) that are proper in n5 dimensions.


KEYWORD

nonn


AUTHOR



STATUS

approved



