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A113381 as a simple table

na(n)
01
12
21
36
45
51
637
745
88
91
10429
11635
12120
1311
141
157629
1612815
172556
18231
1914
201
21185776
22343815
2371548
246556
25378
2617
271
285817106
2911651427
302508528
31233706
3213391
33561
3420
351
36224558216
37480718723
38106427700
3910069521
40579047
4123817
42780
4323
441

[1,2,1,6,5,1,37,45,8,1,429,635,120,11,1,7629,
 12815,2556,231,14,1,185776,343815,71548,6556,378,
 17,1,5817106,11651427,2508528,233706,13391,561,20,
 1,224558216,480718723,106427700,10069521,579047,
 23817,780,23,1]