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A370954 as a simple table

na(n)
01
11
23
345
4315
514175
666825
742567525
858046625
91993723875
109280784638125
112143861251406875
1221132346621010625
134370553505709015625
149086380738369043484375
15564653660170076273671875

[1,1,3,45,315,14175,66825,42567525,58046625,
 1993723875,9280784638125,2143861251406875,
 21132346621010625,4370553505709015625,
 9086380738369043484375,564653660170076273671875]