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A001926 as a simple table

na(n)
01
19
246
3177
4571
51632
64270
710446
824244
953942
10115954
11242240
12494087
13987503
141939634
153753007
167167461
1713532608
1825293964
1946856332
2086110792
21157125052
22284866900
23513470464
24920659517
251642844485
262918680214
275164483453
289104522495
2915995633440

[1,9,46,177,571,1632,4270,10446,24244,53942,
 115954,242240,494087,987503,1939634,3753007,
 7167461,13532608,25293964,46856332,86110792,
 157125052,284866900,513470464,920659517,
 1642844485,2918680214,5164483453,9104522495,
 15995633440]