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A209299 as a simple table

na(n)
01
11
24
316
498
5650
65492
750468
8543252
96375668
1083752144
111191943168
1218563252968
13310499073352
145598292885200
15107674197010960
162208771882047120
1748025183073776016
181105381958987588672
1926817991185065949440
20684717365565811694880
2118341702444087583851936

[1,1,4,16,98,650,5492,50468,543252,6375668,
 83752144,1191943168,18563252968,310499073352,
 5598292885200,107674197010960,2208771882047120,
 48025183073776016,1105381958987588672,
 26817991185065949440,684717365565811694880,
 18341702444087583851936]