login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A177269 a(n) = 1 + sum{k=1 to n} A177268(k) 1

%I

%S 2,4,8,16,28,64,70,100,162,1024,1035,4096,8192,16384,16401,65536,

%T 65596,262144,262192,263169,269312,4194304,4194325,4477456,4493312,

%U 4498641,4498752,268435456,268437200,1073741824,1073741834,1088472064

%N a(n) = 1 + sum{k=1 to n} A177268(k)

%C The number of divisors of a(n) is n.

%C a(n+1)-a(n) does not equal a(m+1)-a(m) for any m not equal to n, n and m >= 2.

%C This is analogous to A175351(n) with a(1)=1, a(2)=2.

%Y Cf. A175350, A175351, A177268

%K nonn

%O 2,1

%A _Hugo van der Sanden_, May 06 2010

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 22 14:18 EDT 2019. Contains 322349 sequences. (Running on oeis4.)