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A275551 as a simple table

na(n)
01
11
22
36
436
5325
63924
758996
81049088
921526641
10500010000
1112968792826
12371504434176
1311649044974645
14396857394156608
1514596463098125000
16576460752571858944
1724330595941321312961
181092955779880368226560
1952063675149116964615310
202621440000000512000000000

[1,1,2,6,36,325,3924,58996,1049088,21526641,
 500010000,12968792826,371504434176,11649044974645,
 396857394156608,14596463098125000,
 576460752571858944,24330595941321312961,
 1092955779880368226560,52063675149116964615310,
 2621440000000512000000000]