A161767 a(0)=0, a(1)=2. For n >=2, a(n) = the smallest integer >= a(n-1)+2 with exactly (a(n-1)-a(n-2)) divisors.

0, 2, 5, 9, 14, 16, 19, 25, 28, 49, 576, 46221064723759104

Offset

0,2

Comments

a(n)-a(n-1) = number of divisors of a(n+1) = A161768(n).

Links

Table of n, a(n) for n=0..11.

Crossrefs

Cf. A000005, A161768.

Sequence in context: A284916 A070986 A074793 * A235333 A060139 A373799

Adjacent sequences: A161764 A161765 A161766 * A161768 A161769 A161770

Keyword

nonn

Author

Leroy Quet, Jun 18 2009

Extensions

a(11) from Amiram Eldar, Jan 27 2019

Status

approved