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Search: id:A091038
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| A091038 |
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Second column (k=6) of array A090216 ((5,5)-Stirling2) divided by 5*5!=600. |
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2
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| 1, 840, 619200, 447552000, 322444800000, 232185139200000, 167176286208000000, 120367284387840000000, 86664487757414400000000, 62398436345118720000000000, 44926874787659120640000000000
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OFFSET
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2,2
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FORMULA
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a(n)=A090216(n, 6)/(5*5!)= (5!^(n-2))*(6^(n-1)-1)/5, n>=2.
G.f.: (x^2)/((1-6!*x)*(1-5!*x))= (x/(5*5!))*(1/(1-6!*x) - 1/(1-5!*x)).
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CROSSREFS
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Cf. A091037 (second column of (4, 4)-Stirling2 array divided by 96).
Sequence in context: A107516 A091035 A091036 this_sequence A121498 A108324 A133496
Adjacent sequences: A091035 A091036 A091037 this_sequence A091039 A091040 A091041
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KEYWORD
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nonn,easy
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AUTHOR
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Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Jan 23 2004
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