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A338016 Triangular array read by rows: T(n,k) = A338012(n) * A338012(k) for 1 <= k <= n. 6

%I #12 Oct 09 2020 03:35:40

%S 0,0,9,0,12,16,0,30,40,100,0,54,72,180,324,0,69,92,230,414,529,0,102,

%T 136,340,612,782,1156,0,165,220,550,990,1265,1870,3025,0,201,268,670,

%U 1206,1541,2278,3685,4489,0,279,372,930,1674,2139,3162,5115,6231,8649

%N Triangular array read by rows: T(n,k) = A338012(n) * A338012(k) for 1 <= k <= n.

%H Peter Kagey, <a href="/A338016/b338016.txt">Table of n, a(n) for n = 1..10011</a> (first 141 rows, flattened)

%e Multiplication table begins:

%e * | 0 3 4 10 18 23 34 55 67

%e -----+---------------------------------------

%e 0 | 0

%e 3 | 0 9

%e 4 | 0 12 16

%e 10 | 0 30 40 100

%e 18 | 0 54 72 180 324

%e 23 | 0 69 92 230 414 529

%e 34 | 0 102 136 340 612 782 1156

%e 55 | 0 165 220 550 990 1265 1870 3025

%e 67 | 0 201 268 670 1206 1541 2278 3685 4489

%Y Cf. A338012, A338014 (addition), A338017 (by antidiagonals).

%Y Cf. A337661, A337974.

%K nonn,tabl

%O 1,3

%A _Peter Kagey_, Oct 06 2020

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Last modified April 25 09:38 EDT 2024. Contains 371967 sequences. (Running on oeis4.)