Multifactorial
المؤلف:
Sloane, N. J. A.
المصدر:
Sequences A000142/M1675, A006882/M0876, A007661/M0596, and A007662/M0534 in "The On-Line Encyclopedia of Integer Sequences."
الجزء والصفحة:
...
19-5-2019
2195
Multifactorial
A generalization of the factorial and double factorial,
etc., where the products run through positive integers.
The following table lists the values of the first few multifactorials for
, 2, ....
 |
A000142 |
1, 2, 6, 24, 120, 720, ... |
 |
A006882 |
1, 2, 3, 8, 15, 48, 105, ... |
 |
A007661 |
1, 2, 3, 4, 10, 18, 28, 80, 162, 280, ... |
 |
A007662 |
1, 2, 3, 4, 5, 12, 21, 32, 45, 120, ... |
REFERENCES:
Sloane, N. J. A. Sequences A000142/M1675, A006882/M0876, A007661/M0596, and A007662/M0534 in "The On-Line Encyclopedia of Integer Sequences."
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