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A264078 as a simple table

na(n)
01
11
21
31
42
53
66
714
830
976
10170
11553
121583
135106
1414090
1541002
16164769
17603513
182418348
198335804
2028704417
21109618261
22466318442
232114095511
2410276979159
2543213859606
26175668903294
27793946150358
283490939879402
2915500974371599
3082490059523125

[1,1,1,1,2,3,6,14,30,76,170,553,1583,5106,14090,
 41002,164769,603513,2418348,8335804,28704417,
 109618261,466318442,2114095511,10276979159,
 43213859606,175668903294,793946150358,
 3490939879402,15500974371599,82490059523125]