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A064319 Triangle with a(n,1) = n and a(n,k) = a(n,k-1) * a(n-1,k-1). 3
1, 2, 2, 3, 6, 12, 4, 12, 72, 864, 5, 20, 240, 17280, 14929920, 6, 30, 600, 144000, 2488320000, 37150418534400000, 7, 42, 1260, 756000, 108864000000, 270888468480000000000, 10063619980174622195712000000000000000, 8, 56 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
Rows start
1;
2, 2;
3, 6, 12;
4, 12, 72, 864;
...
CROSSREFS
Columns include A000027, A002378, A047928, A064321. Right-hand side is A064320. Cf. A053218 which uses addition rather than multiplication to produce binomial transform.
Sequence in context: A320783 A049853 A162599 * A307241 A064674 A095902
KEYWORD
nonn,tabl
AUTHOR
Henry Bottomley, Sep 10 2001
EXTENSIONS
Name corrected by Sean A. Irvine, Jun 30 2023
STATUS
approved

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Last modified February 21 04:08 EST 2024. Contains 370219 sequences. (Running on oeis4.)