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A171959
a(1) = 0, for n >= 2; a(n) = the smallest number h such that tau(h) = A000005(h) = a(n-1) + 3.
9
0, 4, 64, 73786976294838206464
OFFSET
1,2
COMMENTS
a(5) = 2^44210291368986342 * 3^1668 is too large to include.
FORMULA
A000005(a(n)) = a(n-1) + 3 for n >= 2.
For n>1, a(n) = A005179(a(n-1) + 3).
KEYWORD
nonn
AUTHOR
Jaroslav Krizek, Nov 06 2010
STATUS
approved