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A266597 as a simple table

na(n)
11
20
32
438
51197
664497
74975742
8519665920
970425165645
1012012958306121
112518082525423953
12636165450001831755

[1,0,2,38,1197,64497,4975742,519665920,
 70425165645,12012958306121,2518082525423953,
 636165450001831755]