This site is supported by donations to The OEIS Foundation.

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A264666 Triangle of partial row products of A264662. 2
 2, 2, 6, 2, 10, 30, 2, 10, 30, 210, 2, 10, 30, 330, 2310, 2, 10, 130, 390, 4290, 30030, 2, 34, 170, 2210, 6630, 72930, 510510, 2, 34, 170, 2210, 6630, 125970, 1385670, 9699690, 2, 34, 170, 2210, 6630, 125970, 1385670, 9699690, 223092870, 2, 34, 170, 2210 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS T(n,1) = A264662(n,1) and T(n,k) = A264662(n,k) * T(n,k-1), k=2..n; T(n,n) = A002110(n). LINKS Reinhard Zumkeller, Rows n = 1..125 of triangle, flattened EXAMPLE .  1:  2 .  2:  2, 6 .  3:  2,10, 30 .  4:  2,10, 30, 210 .  5:  2,10, 30, 330, 2310 .  6:  2,10,130, 390, 4290, 30030 .  7:  2,34,170,2210, 6630, 72930, 510510 .  8:  2,34,170,2210, 6630,125970,1385670, 9699690 .  9:  2,34,170,2210, 6630,125970,1385670, 9699690,223092870 . 10:  2,34,170,2210,64090,192270,3653130,40184430,281291010,6469693230 . PROG (Haskell) a264666 n k = a264666_tabl !! (n-1) !! (n-1) a264666_row n = a264666_tabl !! (n-1) a264666_tabl = map (scanl1 (*)) a264662_tabl CROSSREFS Cf. A264662, A002110. Sequence in context: A298299 A110765 A176991 * A283362 A091818 A278240 Adjacent sequences:  A264663 A264664 A264665 * A264667 A264668 A264669 KEYWORD nonn,tabl AUTHOR Reinhard Zumkeller, Nov 20 2015 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 17 10:08 EST 2019. Contains 319218 sequences. (Running on oeis4.)