|
| |
|
|
A002885
|
|
Number of cyclic Steiner triple systems of order 2n+1.
(Formerly M0032 N0393)
|
|
0
| |
|
|
1, 1, 0, 1, 0, 0, 1, 2, 0, 4, 7, 0, 12, 8, 0, 80, 84, 0, 820, 798, 0, 9508, 11616, 0, 157340, 139828, 0, 3027456, 2353310
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,8
|
|
|
REFERENCES
| C. J. Colbourn and A. Rosa: Triple Systems, Clarendon Press (Oxford) 1999
J. Doyen, Problem 30, p. 504 of R. K. Guy et al., editors, Combinatorial Structures and Their Applications (Proceedings Calgary Conference Jun 1969}), Gordon and Breach, NY, 1970.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
|
LINKS
| Index entries for sequences related to Steiner systems
|
|
|
CROSSREFS
| Sequence in context: A066659 A085623 A190791 * A011121 A117902 A021087
Adjacent sequences: A002882 A002883 A002884 * A002886 A002887 A002888
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
EXTENSIONS
| More terms from Michael Steyer (m.steyer(AT)osram.de), Jan 27 2005
|
| |
|
|
