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A131684 as a simple table

na(n)
0829440
13053435
240040448
32673065934
4323958835200
524350583830265
6971969903106048
723061845117771260
8365309311365605376
94216355578004498775
1037787143366734755840
11275548505246977513866
121693398609738955671552
139010265266941299501973
1442393383140543522560000

[829440,3053435,40040448,2673065934,323958835200,
 24350583830265,971969903106048,23061845117771260,
 365309311365605376,4216355578004498775,
 37787143366734755840,275548505246977513866,
 1693398609738955671552,9010265266941299501973,
 42393383140543522560000]