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A248676
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Decimal expansion of r = sum_{n >= 0} floor(n/3)!/n!.
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4
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2, 7, 1, 9, 9, 0, 9, 2, 6, 5, 4, 9, 0, 8, 5, 3, 8, 3, 4, 2, 1, 3, 2, 2, 2, 8, 6, 5, 2, 2, 4, 5, 2, 5, 2, 1, 1, 9, 3, 3, 1, 0, 0, 7, 6, 0, 4, 8, 4, 7, 1, 6, 7, 2, 7, 5, 0, 8, 5, 8, 8, 5, 5, 8, 9, 5, 9, 7, 4, 1, 7, 4, 6, 6, 1, 0, 2, 9, 5, 5, 8, 4, 9, 5, 0, 1
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OFFSET
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1,1
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LINKS
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FORMULA
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r = sum_{n >= 0} p(3,n)*n!/(3*n + 2)!, where p(k,n) is defined at A248664.
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EXAMPLE
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r = 2.71990926549085383421322286522452521...
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MAPLE
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MATHEMATICA
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x = N[Sum[Floor[n/2]!/n!, {n, 0, 200}], 120]
x = N[Sum[Floor[n/3]!/n!, {n, 0, 200}], 120]
x = N[Sum[Floor[n/4]!/n!, {n, 0, 200}], 120]
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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