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A113988 as a simple table

na(n)
01
12
21
34
44
51
68
712
86
91
1018
1136
1226
138
141
1546
16116
17108
1846
1910
201
21136
22416
23468
24248
2572
2612
271
28464
291680
302194
311366
32480
33104
3414
351
361818
377656
3811294
397976
403222
41828
42142
4316
441
458122
4639256
4764152
4850186
4922590
506568
511316
52186
5318
541

[1,2,1,4,4,1,8,12,6,1,18,36,26,8,1,46,116,108,46,
 10,1,136,416,468,248,72,12,1,464,1680,2194,1366,
 480,104,14,1,1818,7656,11294,7976,3222,828,142,16,
 1,8122,39256,64152,50186,22590,6568,1316,186,18,1]