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A279561 as a simple table

na(n)
01
11
22
36
421
577
6287
71079
84082
915522
1059280
11227240
12873886
133370030
1413027730
1550469890
16195892565
17761615285
182965576715
1911563073315
2045141073925
21176423482325
22690215089745
232702831489825
2410593202603775
2541550902139551
26163099562175851

[1,1,2,6,21,77,287,1079,4082,15522,59280,227240,
 873886,3370030,13027730,50469890,195892565,
 761615285,2965576715,11563073315,45141073925,
 176423482325,690215089745,2702831489825,
 10593202603775,41550902139551,163099562175851]