|
| |
|
|
A124048
|
|
a(n) = count of instances where the i-th permutation is divisible by i, treating the permutations of {0,1,...n-1} as integers base n in ascending order.
|
|
0
| |
|
|
1, 2, 1, 7, 4, 11, 8, 26, 23, 30, 14, 28
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
EXAMPLE
| For n = 5, the first, 2nd, 7th and 18th permutations base 3 {01234,01243,02134,03421} = decimal {194,198,294,486} are divisible by 1,2,7 and 18 respectively. a(5) = 4.
|
|
|
CROSSREFS
| Cf. A124453.
Sequence in context: A089225 A185110 A075085 * A087059 A120872 A141512
Adjacent sequences: A124045 A124046 A124047 * A124049 A124050 A124051
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| David J. Scambler (dscambler(AT)bmm.com), Nov 02 2006
|
| |
|
|