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A223842 as a simple table

na(n)
17
249
3232
4824
52388
65992
713582
828642
957306
10110164
11205131
12371923
13658926
141143584
151947904
163261320
175374024
188725020
1913970658
2022081342
2134476575
2253211615
2381232894
24122724138
25183570978
26271978936
27399288201
28581038793

[7,49,232,824,2388,5992,13582,28642,57306,110164,
 205131,371923,658926,1143584,1947904,3261320,
 5374024,8725020,13970658,22081342,34476575,
 53211615,81232894,122724138,183570978,271978936,
 399288201,581038793]