login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A206804 (1/2)*A206803. 4
1, 4, 13, 26, 49, 78, 121, 188, 264, 370, 498, 638, 804, 1012, 1265, 1534, 1854, 2210, 2585, 3020, 3497, 4040, 4675, 5358, 6066, 6826, 7613, 8456, 9502, 10608, 11807, 13038, 14434, 15864, 17399, 19042, 20759, 22590, 24538, 26526, 28719 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,2
LINKS
MATHEMATICA
s[k_] := Prime[k + 1]; t[1] = 0;
p[n_] := Sum[s[k], {k, 1, n}];
c[n_] := n*s[n] - p[n]
t[n_] := t[n - 1] + (n - 1) s[n] - p[n - 1]
Table[c[n], {n, 2, 100}] (* A185382 *)
%/2 (* A206802 *)
Flatten[Table[t[n], {n, 2, 40}]] (* A206803 *)
%/2 (* A206804 *)
CROSSREFS
Cf. A206803.
Sequence in context: A212901 A049729 A189581 * A304003 A305356 A304946
KEYWORD
nonn
AUTHOR
Clark Kimberling, Feb 13 2012
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)