|
Search: id:A091201
|
|
|
| A091201 |
|
A061688 appears to count the periodic points for a certain map. If so, then this is the sequence of the numbers of orbits of length n under that map. |
|
+0
1
|
|
| 1, 32, 16281, 52293792, 692825815625, 28927809504181734
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
REFERENCES
|
Y. Puri and T. Ward, Arithmetic and growth of periodic orbits, J. Integer Seqs., Vol. 4 (2001), #01.2.1.
J.-M. Sixdeniers, K. A. Penson and A. I. Solomon, Extended Bell and Stirling Numbers From Hypergeometric Exponentiation, J. Integer Seqs. Vol. 4 (2001), #01.1.4.
|
|
LINKS
|
Thomas Ward, Exactly realizable sequences
|
|
FORMULA
|
If b(n) is the (n+1)th term of A061688, then a(n)=(1/n)*Sum_{d|n}mu(d)b(n/d)
|
|
EXAMPLE
|
b(1)=1,b(3)=48844, so a(3)=(1/3)(48844-1)=16281.
|
|
CROSSREFS
|
Cf. A061688.
Sequence in context: A069444 A062315 A159384 this_sequence A121913 A016877 A123393
Adjacent sequences: A091198 A091199 A091200 this_sequence A091202 A091203 A091204
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Thomas Ward (t.ward(AT)uea.ac.uk), Feb 24 2004
|
|
|
Search completed in 0.002 seconds
|
