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A242500 as a simple table

na(n)
21
30
42
54
63
716
819
940
1095
11136
12321
13588
141057
152240
163998
177848
1815339
1928464
2056143
21106788
22204083
23396704
24755052
251457456
262806531
275377112
2810382243
2919947252
3038382957
3173996576
32142311198
33274283168
34528438319
351017784016
361962451118
373781912684

[1,0,2,4,3,16,19,40,95,136,321,588,1057,2240,3998,
 7848,15339,28464,56143,106788,204083,396704,
 755052,1457456,2806531,5377112,10382243,19947252,
 38382957,73996576,142311198,274283168,528438319,
 1017784016,1962451118,3781912684]