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A191718 as a simple table

na(n)
11
20
32
42
50
64
70
814
90
1010
1124
120
1370
140
1526
160
17304
180
19340
200
2176
22720
230
242548
250
261540
270
28232
290
3013488
310
3218956
330
347112
350
36764
3740320
380
39161936
400
41125580
420
4332424
440
452620
460
471011456
480
491648160
500
51808248
520
53151440
540
559496
563628800

[1,0,2,2,0,4,0,14,0,10,24,0,70,0,26,0,304,0,340,0,
 76,720,0,2548,0,1540,0,232,0,13488,0,18956,0,7112,
 0,764,40320,0,161936,0,125580,0,32424,0,2620,0,
 1011456,0,1648160,0,808248,0,151440,0,9496,
 3628800]