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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

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Last modified October 19 19:55 EDT 2018. Contains 316378 sequences. (Running on oeis4.)