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A064144
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a(n) is the number of divisors of n!+1.
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5
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2, 2, 2, 3, 3, 4, 3, 4, 8, 4, 2, 6, 4, 4, 8, 32, 8, 64, 4, 4, 8, 8, 12, 4, 4, 4, 2, 4, 8, 32, 16, 16, 32, 4, 32, 64, 2, 4, 16, 128, 2, 8, 16, 8, 8, 8, 16, 4, 32, 32, 64, 16, 16, 4, 4, 16, 8, 16, 4, 16, 16, 8, 32, 8
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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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a(n) = tau(n!+1).
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MATHEMATICA
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Do[ Print[ DivisorSigma[0, n! + 1]], {n, 1, 40} ]
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PROG
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(Python)
from math import factorial
from sympy import divisor_count
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CROSSREFS
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KEYWORD
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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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