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A004048 as a simple table

na(n)
01
10
2756
38736
444226
5187488
6531468
71314144
83097332
96141408
1010968048
1121258720
1234038186
1353778816
1488943400
15131804064
16184024386
17289650816
18387420516
19524343456
20756139104
21992308512

[1,0,756,8736,44226,187488,531468,1314144,3097332,
 6141408,10968048,21258720,34038186,53778816,
 88943400,131804064,184024386,289650816,387420516,
 524343456,756139104,992308512]