This site is supported by donations to The OEIS Foundation.

 Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS". Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A011904 [ n(n-1)(n-2)/22 ]. 0
 0, 0, 0, 0, 1, 2, 5, 9, 15, 22, 32, 45, 60, 78, 99, 124, 152, 185, 222, 264, 310, 362, 420, 483, 552, 627, 709, 797, 893, 996, 1107, 1225, 1352, 1488, 1632, 1785, 1947, 2119, 2300, 2492, 2694, 2907, 3130, 3365 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,6 LINKS FORMULA G.f.: (x^4 (1-x+2 x^2-x^3+x^4-x^5+2 x^6-x^8+x^9))/((-1+x)^4 (1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10)). - Peter J. C. Moses, Jun 02 2014 CROSSREFS Sequence in context: A152738 A022941 A007982 * A218914 A047809 A014126 Adjacent sequences:  A011901 A011902 A011903 * A011905 A011906 A011907 KEYWORD nonn AUTHOR STATUS approved

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