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A128318 as a simple table

na(n)
01
11
24
328
4276
53480
653232
7955524
819672320
9456803328
1011810032896
11336463895808
1210473959755008
13353739038360832
1412883270796310528
15503352328766459904
1621001144899441162240
17931963581151516477440
1843832663421577452887040
192178029362561822117094400
20114014865901176834809333760

[1,1,4,28,276,3480,53232,955524,19672320,
 456803328,11810032896,336463895808,10473959755008,
 353739038360832,12883270796310528,
 503352328766459904,21001144899441162240,
 931963581151516477440,43832663421577452887040,
 2178029362561822117094400,
 114014865901176834809333760]