|
| |
|
|
A061121
|
|
Number of degree-n permutations of order exactly 6.
|
|
23
| |
|
|
0, 0, 0, 0, 20, 240, 1470, 10640, 83160, 584640, 4496030, 42658440, 371762820, 3594871280, 38650622010, 396457108320, 4330689250160, 53963701424640, 641211774798510, 8205894865096280, 113786291585124060
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,5
|
|
|
FORMULA
| E.g.f.: exp(x)-exp(x+1/2*x^2)-exp(x+1/3*x^3)+exp(x+1/2*x^2+1/3*x^3+1/6*x^6).
|
|
|
CROSSREFS
| Cf. A000085, A001470, A001472, A052501, A053496-A053505, A001189, A001471, A001473, A061121-A061128.
Sequence in context: A074334 A163004 A061139 * A073398 A040075 A138442
Adjacent sequences: A061118 A061119 A061120 * A061122 A061123 A061124
|
|
|
KEYWORD
| easy,nonn
|
|
|
AUTHOR
| Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 14 2001
|
| |
|
|
