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A281776 as a simple table

na(n)
00
10
20
31
454
5955
611760
7122941
81175034
910595215
1091506420
11763624081
126194818014
1349084747075
14381338401080
152914184784421
1621965095364994
17163656285828535
181207613518375740
198838842878371961
2064253768864671974
21464416229729871595
223340518964319750400

[0,0,0,1,54,955,11760,122941,1175034,10595215,
 91506420,763624081,6194818014,49084747075,
 381338401080,2914184784421,21965095364994,
 163656285828535,1207613518375740,8838842878371961,
 64253768864671974,464416229729871595,
 3340518964319750400]