|
| |
|
|
A046201
|
|
Distinct odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.
|
|
17
|
|
|
|
1, 3, 5, 7, 105, 9, 11, 495, 13, 6435, 15, 1365, 15015, 45045, 17, 19, 2907, 21, 101745, 23, 5313, 168245, 1716099, 25, 18386775, 27, 8775, 42181425, 143416845, 29, 593775, 90135045, 882230895, 31, 13485, 849555, 18407025, 181440675
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
REFERENCES
|
L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 83, Problem 25.
|
|
|
LINKS
|
Table of n, a(n) for n=1..38.
|
|
|
EXAMPLE
|
1/1; 1/2, 1/2; 1/3, 1/6, 1/3; 1/4, 1/12, 1/12, 1/4; 1/5, 1/20, 1/30, 1/20, 1/5; ...
|
|
|
CROSSREFS
|
Cf. A003506, A046202.
Sequence in context: A104388 A110337 A132287 * A128344 A114366 A088092
Adjacent sequences: A046198 A046199 A046200 * A046202 A046203 A046204
|
|
|
KEYWORD
|
tabf,nonn,easy
|
|
|
AUTHOR
|
Mohammad K. Azarian
|
|
|
EXTENSIONS
|
More terms from James A. Sellers, Dec 13 1999
|
|
|
STATUS
|
approved
|
| |
|
|
