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A323867 as a simple table

na(n)
01
11
21
35
411
533
657
7157
8303
9683
101358
112974
125932
1312560
1425328
1552400
16106256
17217875
18441278
19899955
201822703
213701401
227491173
2315178253
2430691135
2562085846
26125435689
27253414326
28511547323
291032427635
302082551931
314199956099
328466869525
3317064777665

[1,1,1,5,11,33,57,157,303,683,1358,2974,5932,
 12560,25328,52400,106256,217875,441278,899955,
 1822703,3701401,7491173,15178253,30691135,
 62085846,125435689,253414326,511547323,1032427635,
 2082551931,4199956099,8466869525,17064777665]