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A149291 as a simple table

na(n)
01
11
24
311
446
5145
6641
72275
810330
938683
10179077
11698969
123277788
1313154295
1462279600
15255360623
161217775810
175076594445
1824346635475
19102858261727
20495528611722
212116511750627
2210234179952692
2344114208093693
24213964420670390
25929479716561285
264519843635303271
2719766146842430959

[1,1,4,11,46,145,641,2275,10330,38683,179077,
 698969,3277788,13154295,62279600,255360623,
 1217775810,5076594445,24346635475,102858261727,
 495528611722,2116511750627,10234179952692,
 44114208093693,213964420670390,929479716561285,
 4519843635303271,19766146842430959]