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A022813 as a simple table

na(n)
01
11
25
315
445
5110
6271
7599
81309
92690
105436
1110545
1220148
1337341
1468223
15121878
16214846
17371993
18636570
191073325
201790721
212950922
224816603
237778937
2412455988
2519761148
2631108121
2748572686
2875307513
29115909727
30177255526
31269294119
32406708721
33610593948

[1,1,5,15,45,110,271,599,1309,2690,5436,10545,
 20148,37341,68223,121878,214846,371993,636570,
 1073325,1790721,2950922,4816603,7778937,12455988,
 19761148,31108121,48572686,75307513,115909727,
 177255526,269294119,406708721,610593948]