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A121413 as a simple table

na(n)
01
11
24
330
4335
54984
692652
72065146
853636520
91589752230
1052926799310
111954793723688
1279297921097850
133504206787532290
14167533486104374420
158615231103973721610
16474145710046504872894
1727806642356199323970739

[1,1,4,30,335,4984,92652,2065146,53636520,
 1589752230,52926799310,1954793723688,
 79297921097850,3504206787532290,
 167533486104374420,8615231103973721610,
 474145710046504872894,27806642356199323970739]