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A080046 Multiplicative Pascal triangle, read by rows: T(n,1)=T(n,n)=n and T(n,k) = T(n-1,k-1) * T(n-1,k). 6
1, 2, 2, 3, 4, 3, 4, 12, 12, 4, 5, 48, 144, 48, 5, 6, 240, 6912, 6912, 240, 6, 7, 1440, 1658880, 47775744, 1658880, 1440, 7, 8, 10080, 2388787200, 79254226206720, 79254226206720, 2388787200, 10080, 8, 9, 80640, 24078974976000 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

T(n,2) = A052849(n) for n>1.

LINKS

Reinhard Zumkeller and Andre F. Labossiere, Rows n=1..14 of triangle, flattened

Index entries for triangles and arrays related to Pascal's triangle

EXAMPLE

1

2  2

3  4  3

4 12 12 4

PROG

(Haskell)

a080046 n k = a080046_tabl !! (n-1) !! (k-1)

a080046_row n = a080046_tabl !! (n-1)

a080046_tabl = iterate f [1] where

   f (x:xs) = [x + 1] ++ (zipWith (*) xs $ reverse xs) ++ [x + 1]

-- Reinhard Zumkeller, Oct 27 2013

CROSSREFS

Cf. A007318, A082611.

Cf. A051597.

Sequence in context: A129595 A094508 A183517 * A047675 A187199 A297907

Adjacent sequences:  A080043 A080044 A080045 * A080047 A080048 A080049

KEYWORD

nonn,tabl,look

AUTHOR

Reinhard Zumkeller, Jan 21 2003

EXTENSIONS

Corrected by André F. Labossière, Sep 27 2004

STATUS

approved

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Last modified April 10 07:36 EDT 2021. Contains 342843 sequences. (Running on oeis4.)