A066119 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.

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

Offset

1,1

Links

Table of n, a(n) for n=1..38.

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; ...

Crossrefs

Columns include A000040, A002110, A006939 and A066120. Right hand side includes A007395 and A007283. Cf. A066121.

Sequence in context: A249492 A113649 A307864 * A003970 A094443 A348066

Adjacent sequences: A066116 A066117 A066118 * A066120 A066121 A066122

Keyword

nonn,tabl

Author

Henry Bottomley, Dec 05 2001

Status

approved