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A188023 Triangle read by rows, T(n,k) = k*A115361(n-1,k-1). 0

%I #6 May 09 2023 07:31:30

%S 1,1,2,0,0,3,1,2,0,4,0,0,0,0,5,0,0,3,0,0,6,0,0,0,0,0,0,7,1,2,0,4,0,0,

%T 0,8,0,0,0,0,0,0,0,0,9,0,0,0,0,5,0,0,0,0,10,0,0,0,0,0,0,0,0,0,0,11,0,

%U 0,3,0,0,6,0,0,0,0,0,12

%N Triangle read by rows, T(n,k) = k*A115361(n-1,k-1).

%C Triangle obtained by multiplying the lower triangular matrices A115361 and A127648.

%e First few rows of the triangle =

%e 1

%e 1, 2

%e 0, 0, 3

%e 1, 2, 0, 4

%e 0, 0, 0, 0, 5

%e 0, 0, 3, 0, 0, 6

%e 0, 0, 0, 0, 0, 0, 7

%e 1, 2, 0, 4, 0, 0, 0, 8

%e 0, 0, 0, 0, 0, 0, 0, 0, 9

%e 0, 0, 0, 0, 5, 0, 0, 0, 0, 10

%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11

%e 0, 0, 3, 0, 0, 6, 0, 0, 0, 0, 0, 12

%e ...

%Y Cf. A115361, A127648, A129527 (row sums)

%K tabl,nonn

%O 1,3

%A _Gary W. Adamson_, Mar 19 2011

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)