|
| |
|
|
A126629
|
|
a(n) is the number of nonnegative integers k less than 10^n such that the decimal representation of k lacks digits 1 and 2, at least one of digits 3,4,5 and at least one of digits 6,7,8,9.
|
|
0
| |
|
|
8, 64, 506, 3916, 29498, 215524, 1527506, 10528876, 70841738, 467044084, 3027621506, 19356463036, 122355512378, 766290978244, 4762898595506, 29420807536396, 180813134269418, 1106606890266004, 6749433735297506
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
LINKS
| Milan Janjic, Enumerative Formulas for Some Functions on Finite Sets
|
|
|
FORMULA
| a(n)=12*6^n-30*5^n+34*4^n-21*3^n+7*2^n-1
|
|
|
EXAMPLE
| a(8)=10528876
|
|
|
MAPLE
| f:=n->12*6^n-30*5^n+34*4^n-21*3^n+7*2^n-1;
|
|
|
CROSSREFS
| Cf. A125630, A125948, A125947, A125946, A125945, A125910, A125909, A125908, A125880, A125897, A125904, A125858.
Sequence in context: A146885 A122093 A127426 * A171282 A125498 A193539
Adjacent sequences: A126626 A126627 A126628 * A126630 A126631 A126632
|
|
|
KEYWORD
| nonn,base
|
|
|
AUTHOR
| Aleksandar M. Janjic and Milan R. Janjic (agnus(AT)blic.net), Feb 08 2007
|
| |
|
|
