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A287506 as a simple table

na(n)
01
12
20
30
424
548
696
7192
8480
9960
101920
113840
127680
1315360
1430720
1561440
16123392
17246784
18491520
19983040
201974272
213948544
227864320
2315728640
2431752192
2563504384
26125829120
27251658240
28507641856
291015283712
302059403264
314118806528
328439332864

[1,2,0,0,24,48,96,192,480,960,1920,3840,7680,
 15360,30720,61440,123392,246784,491520,983040,
 1974272,3948544,7864320,15728640,31752192,
 63504384,125829120,251658240,507641856,1015283712,
 2059403264,4118806528,8439332864]