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A273154 as a simple table

na(n)
01
12
24
38
414
526
648
788
8160
9292
10532
11972
121768
133220
145866
1510686
1619454
1735430
1864528
19117520
20214004
21389724
22709730
231292496
242353758
254286442
267806048
2714215620
2825888034
2947144704
3085855230
31156350996
32284730756
33518523184
34944282620

[1,2,4,8,14,26,48,88,160,292,532,972,1768,3220,
 5866,10686,19454,35430,64528,117520,214004,389724,
 709730,1292496,2353758,4286442,7806048,14215620,
 25888034,47144704,85855230,156350996,284730756,
 518523184,944282620]