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A275388 as a simple table

na(n)
00
11
22
35
410
520
637
768
8120
9210
10360
11612
121028
131717
142846
154698
167720
1712649
1820666
1933700
2054856
2189183
22144831
23235016
24381102
25617693
261000753
271620882
282624645
294249245
306878455
3111133304
3218018601
3329160254
3447188998
3576361562
36123565443
37199944982

[0,1,2,5,10,20,37,68,120,210,360,612,1028,1717,
 2846,4698,7720,12649,20666,33700,54856,89183,
 144831,235016,381102,617693,1000753,1620882,
 2624645,4249245,6878455,11133304,18018601,
 29160254,47188998,76361562,123565443,199944982]