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A308148 as a simple table

na(n)
01
12
24
38
414
526
648
788
8160
9292
10532
11966
121756
133194
145810
1510552
1619182
1734868
1863376
19115172
20209316
21380422
22691384
231256538
242283666
254150402
267542974
2713708740

[1,2,4,8,14,26,48,88,160,292,532,966,1756,3194,
 5810,10552,19182,34868,63376,115172,209316,380422,
 691384,1256538,2283666,4150402,7542974,13708740]