A154307
a(n) = (n+1)^4*(4+n)!/24.
Original entry on oeis.org
1, 80, 2430, 53760, 1050000, 19595520, 363031200, 6812467200, 130947062400, 2594592000000, 53182390060800, 1129830653952000, 24898991749632000, 569337009905664000, 13505007035520000000, 332172220849717248000
Offset: 0
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[(n+1)^4*Factorial(4+n)/24: n in [0..20]]; // Vincenzo Librandi, Sep 11 2016
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Table[(n + 1)^4*(4 + n)!/24, {n, 0, 25}] (* G. C. Greubel, Sep 10 2016 *)
A154308
a(n) = (n+1)^5*(5+n)!/120.
Original entry on oeis.org
1, 192, 10206, 344064, 9450000, 235146240, 5590680480, 130799370240, 3064161260160, 72648576000000, 1755018872006400, 43385497111756800, 1100535435333734400, 28694585299245465600, 769785401024640000000, 21259022134381903872000, 604515265659140419584000, 17698965059877321572352000
Offset: 0
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[(n+1)^5*Factorial(5+n)/120: n in [0..20]]; // Vincenzo Librandi, Sep 11 2016
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Table[(n + 1)^5*(5 + n)!/120, {n, 0, 25}] (* G. C. Greubel, Sep 10 2016 *)
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for(n=0,25, print1((n+1)^5*(5+n)!/120, ", ")) \\ G. C. Greubel, Nov 24 2017
A154128
a(n) = 5^n*(n+4)!/n!.
Original entry on oeis.org
24, 600, 9000, 105000, 1050000, 9450000, 78750000, 618750000, 4640625000, 33515625000, 234609375000, 1599609375000, 10664062500000, 69726562500000, 448242187500000, 2838867187500000, 17742919921875000, 109588623046875000
Offset: 0
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[5^n*(n+4)*(n+3)*(n+2)*(n+1): n in [0..20]]; // Vincenzo Librandi, Aug 15 2011
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LinearRecurrence[{25, -250, 1250, -3125, 3125}, {24, 600, 9000, 105000, 1050000}, 25] (* or *) Table[5^n*(n+4)*(n+3)*(n+2)*(n+1), {n,0,25}] (* G. C. Greubel, Sep 02 2016 *)
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