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A052266
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Number of 3 X n matrices over GF(3) under row and column permutations.
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0
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1, 10, 92, 738, 5053, 29930, 155904, 725560, 3061223, 11854073, 42564874, 142944110, 452197071, 1355697097, 3871729568, 10579613832, 27765888553, 70221521921, 171635652958, 406476831574, 934849110107, 2092203571359
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| G.f.: (x^24 + 28*x^23 + 148*x^22 + 518*x^21 + 1862*x^20 + 5096*x^19 + 11172*x^18 + 21813*x^17 + 37333*x^16 + 53936*x^15 + 68880*x^14 + 79114*x^13 + 79184*x^12 + 68880*x^11 + 53992*x^10 + 37277*x^9 + 21813*x^8 + 11144*x^7 + 5124*x^6 + 1862*x^5 + 526*x^4 + 140*x^3 + 28*x^2 + 1)/((1 - x^3)^8*(1 - x^2)^9*(1 - x)^10).
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CROSSREFS
| Cf. A002727.
Sequence in context: A051789 A015467 A144783 * A027325 A037534 A120996
Adjacent sequences: A052263 A052264 A052265 * A052267 A052268 A052269
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KEYWORD
| nonn
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AUTHOR
| Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 04 2000
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