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A287951 as a simple table

na(n)
01
12
22
312
428
58
624
7208
8176
9416
101248
111600
124800
1311904
1413184
1543264
1692928
1796768
18364032
19861184
20486400
211271808
223520512
2312423168
2421409792
2526714112
2679224832
27160579584
28255246336
29565608448
301163624448
311540947968
326315245568
3311030626304

[1,2,2,12,28,8,24,208,176,416,1248,1600,4800,
 11904,13184,43264,92928,96768,364032,861184,
 486400,1271808,3520512,12423168,21409792,26714112,
 79224832,160579584,255246336,565608448,1163624448,
 1540947968,6315245568,11030626304]