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A378071 as a simple table

na(n)
03
15
221
345
4385
5819
63465
77293
8122265
9255255
101062347
112204475
1218253053
1337702175
14155451825
15319929885
1610518906825
1721585857535
1888482569175
19181144476975
201481850184815
213027700543725
2212361581411855
2325214881603275
24411156946959525
25837470267650107

[3,5,21,45,385,819,3465,7293,122265,255255,
 1062347,2204475,18253053,37702175,155451825,
 319929885,10518906825,21585857535,88482569175,
 181144476975,1481850184815,3027700543725,
 12361581411855,25214881603275,411156946959525,
 837470267650107]