|
Search: id:A002853
|
|
|
| A002853 |
|
Maximal size of a set of equiangular lines in n dimensions.
(Formerly M2514 N0994)
|
|
+0
1
|
|
| 1, 3, 6, 6, 10, 16, 28, 28, 28, 28, 28, 28, 28, 28, 36, 40, 48, 48
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
REFERENCES
|
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
W. W. R. Ball and H. S. M. Coxeter,"Mathematical Recreations and Essays," 13th Ed. Dover, p. 307.
P. W. H. Lemmens and J. J. Seidel, Equiangular lines, J. Algebra, 24 (1973), 494-512.
F. Buekenhout, ed., Handbook of Incidence Geometry, 1995, p. 884.
|
|
CROSSREFS
|
Sequence in context: A111652 A159787 A147849 this_sequence A135610 A157018 A113497
Adjacent sequences: A002850 A002851 A002852 this_sequence A002854 A002855 A002856
|
|
KEYWORD
|
hard,nonn,nice
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com).
|
|
EXTENSIONS
|
The sequence continues: 72 <= a(19) <= 76, 90 <= a(20) <= 96, a(21) = 126, a(22) = 176, a(23) = ... = a(42) = 276, a(43) = 344.
|
|
|
Search completed in 0.006 seconds
|
