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A066119
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Multi-level primorials: triangle with a(n,k)=a(n-1,k-1)*a(n-1,k) but with a(n,1)=p(n) and a(n,n)=2.
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3
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2, 3, 2, 5, 6, 2, 7, 30, 12, 2, 11, 210, 360, 24, 2, 13, 2310, 75600, 8640, 48, 2, 17, 30030, 174636000, 653184000, 414720, 96, 2, 19, 510510, 5244319080000, 114069441024000000, 270888468480000, 39813120, 192, 2, 23, 9699690
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| a(4,3)=a(3,2)*a(3,3)=6*2=12. Rows start 2; 3,2; 5,6,2; 7,30,12,2; ...
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CROSSREFS
| Columns include A000040, A002110, A006939 and A066120. Right hand side includes A007395 and A007283. Cf. A066121.
Sequence in context: A099043 A021047 A113649 * A003970 A094443 A135873
Adjacent sequences: A066116 A066117 A066118 * A066120 A066121 A066122
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KEYWORD
| nonn,tabl
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Dec 05 2001
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