|
| |
|
|
A005634
|
|
Bishops on an n X n board (see Robinson paper for details).
(Formerly M3621)
|
|
1
| |
|
|
0, 0, 1, 4, 28, 85, 630, 3096, 23220, 123952, 1036080, 7230828, 66349440, 500721252, 5080269600, 45925520096, 508031496000, 4919774752448, 59256847036800, 656763354386032, 8532986691801600, 100525956801641104, 1405335512577427200, 18431883446961030912
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 2,4
|
|
|
REFERENCES
| R. W. Robinson, Counting arrangements of bishops, pp. 198-214 of Combinatorial Mathematics IV (Adelaide 1975), Lect. Notes Math., 560 (1976). [The sequence epsilon(n).]
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
|
MAPLE
| For Maple program see A005635.
|
|
|
CROSSREFS
| Sequence in context: A085001 A153784 A030117 * A183485 A183437 A187452
Adjacent sequences: A005631 A005632 A005633 * A005635 A005636 A005637
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
EXTENSIONS
| More terms from N. J. A. Sloane (njas(AT)research.att.com), Sep 28 2006
|
| |
|
|
