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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A210346 The number of degree sequences of simple graphs with 2n vertices with all odd degrees. 2
 1, 3, 14, 74, 425, 2515, 15209, 93382, 579950, 3634062, 22935259, 145601216, 928875440, 5950570725, 38257352346, 246730727752, 1595578916923 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The graphs with an odd number of vertices can't have all odd degrees. a(n) = A210345(2n). The complementary sequence has all even degrees. LINKS Table of n, a(n) for n=1..17. EXAMPLE For 4 vertices, there are three degree sequences with all terms odd: {3,3,3,3}, {3,1,1,1}, {1,1,1,1}. Thus a(2) = 3. CROSSREFS Cf. A210345, A182012. Sequence in context: A213228 A306455 A277939 * A074549 A245246 A126122 Adjacent sequences: A210343 A210344 A210345 * A210347 A210348 A210349 KEYWORD nonn,more AUTHOR Tanya Khovanova and Dai Yang, Mar 20 2012 EXTENSIONS a(7)-a(17) from Robert Gerbicz, Apr 08 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.

Last modified May 29 17:30 EDT 2023. Contains 363042 sequences. (Running on oeis4.)