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Search: id:A093935
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| A093935 |
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a(1) = 1, a(n+1) = a(n) + n*{a(1) + a(2) + ... + a(n)}. |
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1
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| 1, 2, 8, 41, 249, 1754, 14084, 127057, 1272625, 14015014, 168323364, 2189619553, 30670104577, 460235322854, 7366138539416, 125257398648401, 2255126454472401, 42855262052316218, 857238357862313360
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OFFSET
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1,2
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FORMULA
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a[1]=1, a[2]=2, a[n+1]=[(n^2+n-1)a[n]-na[n-1]]/(n-1) (n>=2). - Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 18 2005
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MAPLE
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a[1]:=1:a[2]:=2: for n from 2 to 30 do a[n+1]:=((n^2+n-1)*a[n]-n*a[n-1])/(n-1) od:seq(a[n], n=1..23); (Deutsch)
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CROSSREFS
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Sequence in context: A060436 A020083 A067119 this_sequence A099240 A134055 A136281
Adjacent sequences: A093932 A093933 A093934 this_sequence A093936 A093937 A093938
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 26 2004
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 18 2005
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