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A303438 as a simple table

na(n)
01
12
24
310
418
538
680
7158
8292
9630
101260
112470
124922
139706
1419392
1541010
1678466
17155494
18318764
19625670
201238854
212567666
225106208
2310122522
2420022960
2540082154
2680027140
27163330106
28324201942
29643489014
301306843568
312592220110
325081546084

[1,2,4,10,18,38,80,158,292,630,1260,2470,4922,
 9706,19392,41010,78466,155494,318764,625670,
 1238854,2567666,5106208,10122522,20022960,
 40082154,80027140,163330106,324201942,643489014,
 1306843568,2592220110,5081546084]