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

 

Logo

The OEIS Foundation is grateful to everyone who made a donation during our Annual Appeal.     Visit the new and spectacular Pictures from the OEIS page!

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A176538 Partial sums of A018891. 0

%I

%S 0,0,1,1,2,2,3,4,5,8,10,17,26,43,90

%N Partial sums of A018891.

%C Partial sums of number of positive knots with n crossings. The subsequence of distinct primes in this partial sum begins: 2, 3, 5, 17, 43.

%H <a href="/index/K#knots">Index entries for sequences related to knots</a>

%F a(n) = SUM[i=1..n] A018891(i).

%e a(15) = 0 + 0 + 1 + 0 + 1 + 0 + 1 + 1 + 1 + 3 + 2 + 7 + 9 + 17 + 47 = 90.

%Y Cf. A018891.

%K nonn

%O 1,5

%A _Jonathan Vos Post_, Apr 19 2010

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

License Agreements, Terms of Use, Privacy Policy .

Last modified February 6 08:40 EST 2016. Contains 268029 sequences.