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A276449 as a simple table

na(n)
11
20
30
44
56
60
70
8120
9190
100
110
127140
1311480
140
150
16635376
171028790
180
190
2075287520
21122391522
220
230
2411143364232
2518161699556
260
270
281978369382080
293230129794320
300
310
32409663695276000
33669741609663270
340
350
3696930293990660064
37158625578809472060

[1,0,0,4,6,0,0,120,190,0,0,7140,11480,0,0,635376,
 1028790,0,0,75287520,122391522,0,0,11143364232,
 18161699556,0,0,1978369382080,3230129794320,0,0,
 409663695276000,669741609663270,0,0,
 96930293990660064,158625578809472060]