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A160181 as a simple table

na(n)
01
11
22
33
47
518
659
7221
8936
94361
1022083
11120336
12700653
134333933
1428345090
15195233255
161411303635
1710675375402
1884276173439
19692752181561
205917018378496
2152416910416933
22480786834535247
234559132648864256

[1,1,2,3,7,18,59,221,936,4361,22083,120336,700653,
 4333933,28345090,195233255,1411303635,10675375402,
 84276173439,692752181561,5917018378496,
 52416910416933,480786834535247,4559132648864256]