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A138265 as a simple table

na(n)
01
11
21
32
45
516
661
7271
81372
97795
1049093
11339386
122554596
1320794982
14182010945
151704439030
1617003262470
17180011279335
182015683264820
1923801055350435
20295563725628564
213850618520827590
2252514066450469255
23748191494586458700
2411115833059268126770

[1,1,1,2,5,16,61,271,1372,7795,49093,339386,
 2554596,20794982,182010945,1704439030,17003262470,
 180011279335,2015683264820,23801055350435,
 295563725628564,3850618520827590,
 52514066450469255,748191494586458700,
 11115833059268126770]