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A149376 as a simple table

na(n)
01
11
24
312
448
5165
6711
72765
812230
950199
10227229
11970714
124459345
1319565405
1490903964
15406827818
161906585122
178662077597
1840874264328
19187908308360
20891647946915
214138130214503
2219726740618496
2392263851819229
24441537841755276
252078452663508263
269979603884251570
2747232397814709432

[1,1,4,12,48,165,711,2765,12230,50199,227229,
 970714,4459345,19565405,90903964,406827818,
 1906585122,8662077597,40874264328,187908308360,
 891647946915,4138130214503,19726740618496,
 92263851819229,441537841755276,2078452663508263,
 9979603884251570,47232397814709432]