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A118037 as a simple table

na(n)
01
11
23
35
411
520
637
773
8121
9245
10377
11770
121127
132319
143275
156666
169139
1718574
1824911
1949909
2065743
21131011
22170261
23334703
24429911
25839703
261068693
272061763
282602437
294984321
306248267
3111838917
3214746263
3327743676
3434366353
3564017152

[1,1,3,5,11,20,37,73,121,245,377,770,1127,2319,
 3275,6666,9139,18574,24911,49909,65743,131011,
 170261,334703,429911,839703,1068693,2061763,
 2602437,4984321,6248267,11838917,14746263,
 27743676,34366353,64017152]