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1,2

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 >= 1.

Table of n, a(n) for n=1..27.

Cf. A175350

Sequence in context: A136562 A197274 A100785 * A050005 A272026 A152247

Adjacent sequences: A175348 A175349 A175350 * A175352 A175353 A175354

nonn

Leroy Quet, Apr 19 2010

More terms from Farideh Firoozbakht, Mar 20 2010

approved