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A177269
a(n) = 1 + sum{k=1 to n} A177268(k)
1
2, 4, 8, 16, 28, 64, 70, 100, 162, 1024, 1035, 4096, 8192, 16384, 16401, 65536, 65596, 262144, 262192, 263169, 269312, 4194304, 4194325, 4477456, 4493312, 4498641, 4498752, 268435456, 268437200, 1073741824, 1073741834, 1088472064
OFFSET
2,1
COMMENTS
The number of divisors of a(n) is n.
a(n+1)-a(n) does not equal a(m+1)-a(m) for any m not equal to n, n and m >= 2.
This is analogous to A175351(n) with a(1)=1, a(2)=2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Hugo van der Sanden, May 06 2010
STATUS
approved