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Search: id:A081900
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| A081900 |
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A sequence related to C(n+4,4). |
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+0
2
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| 1, 9, 71, 519, 3606, 24150, 157250, 1001250, 6259375, 38534375, 234140625, 1406640625, 8367187500, 49335937500, 288632812500, 1676757812500, 9678955078125, 55548095703125, 317108154296875, 1801483154296875
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Binomial transform of A081899. 4th binomial transform of C(n+4,4), A000332. 5th binomial transform of (1,4,6,4,1,0,0,0,.....)
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FORMULA
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a(n)=5^n(n^4+74n^3+1571n^2+10354n+15000)/15000 G.f.(1-4x)^4/(1-5x)^5
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CROSSREFS
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Sequence in context: A098205 A000899 A156705 this_sequence A164551 A057080 A001706
Adjacent sequences: A081897 A081898 A081899 this_sequence A081901 A081902 A081903
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KEYWORD
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easy,nonn
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Mar 31 2003
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