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A277795 as a simple table

na(n)
01
11
21
31
42
53
66
711
823
947
10103
11223
12503
131132
142602
155986
1613922
1732433
1875994
19178354
20419945
21990134
222339033
235531459

[1,1,1,1,2,3,6,11,23,47,103,223,503,1132,2602,
 5986,13922,32433,75994,178354,419945,990134,
 2339033,5531459]