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A000651 as a simple table

na(n)
00
11
24
314
453
5223
61034
75221
828437
9165859
101029803
116772850
1246983238
13342509396
142615606677
1520865444825
16173446634597
171499111445237
1813445550920288
19124919896067530
201200320663197275
2111910845573790488

[0,1,4,14,53,223,1034,5221,28437,165859,1029803,
 6772850,46983238,342509396,2615606677,20865444825,
 173446634597,1499111445237,13445550920288,
 124919896067530,1200320663197275,
 11910845573790488]