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A000987 as a simple table

na(n)
00
11
21
32
47
532
6184
71268
810186
993356
10960646
1110959452
12137221954
131870087808
1427548231008
15436081302248
167380628161076
17132975267434552
182540593483517404
1951299775805464824
201091447620966600804
2124401984084483685248
22571907754141520643296

[0,1,1,2,7,32,184,1268,10186,93356,960646,
 10959452,137221954,1870087808,27548231008,
 436081302248,7380628161076,132975267434552,
 2540593483517404,51299775805464824,
 1091447620966600804,24401984084483685248,
 571907754141520643296]