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A367115 as a simple table

na(n)
01
12
24
38
418
552
6184
7688
82512
98864
1030784
11107648
12384432
131403872
145205568
1519443328
1672817856
17273199488
181027939072
193883718144
2014741042464
2156189409088
22214931447680
23824443822848
243169934397184
2512214858010112
2647168251137024

[1,2,4,8,18,52,184,688,2512,8864,30784,107648,
 384432,1403872,5205568,19443328,72817856,
 273199488,1027939072,3883718144,14741042464,
 56189409088,214931447680,824443822848,
 3169934397184,12214858010112,47168251137024]