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A365755 as a simple table

na(n)
01
16
252
3530
45919
570098
6864784
710994490
8143042020
91895316632
1025487708844
11346976558318
124772478619146
1366222166440780
14925880434336320
1513030945427540170
16184467676431001644
172624828100099166536
1837521220349342729680
19538573138719587026440

[1,6,52,530,5919,70098,864784,10994490,143042020,
 1895316632,25487708844,346976558318,4772478619146,
 66222166440780,925880434336320,13030945427540170,
 184467676431001644,2624828100099166536,
 37521220349342729680,538573138719587026440]