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A134715
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Odd Bell numbers.
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2
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1, 1, 5, 15, 203, 877, 21147, 115975, 4213597, 27644437, 1382958545, 10480142147, 682076806159, 5832742205057, 474869816156751, 4506715738447323, 445958869294805289, 4638590332229999353, 545717047936059989389
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listen;
history;
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internal format)
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OFFSET
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1,3
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COMMENTS
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LINKS
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FORMULA
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MAPLE
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a := n -> combinat:-bell(n-1 + floor((n-1)/2)):
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MATHEMATICA
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PROG
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(PARI) a000110(n) = n!*polcoeff(exp(exp(x+x*O(x^n))-1), n);
for(n=0, 30, if(a000110(n)%2 == 1, print1(a000110(n) ", "))) \\ Altug Alkan, Nov 02 2015
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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