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A218691 as a simple table

na(n)
01
12
26
326
4156
51242
612616
7158034
82372880
941725106
10843126624
1119277549898
12492447987136
1313907344659210
14430397513894016
1514487404695687298
16527023721684738304
1720605894357093102434
18861761850029367846400
1938387125875316048363386
201814541564588778500135936

[1,2,6,26,156,1242,12616,158034,2372880,41725106,
 843126624,19277549898,492447987136,13907344659210,
 430397513894016,14487404695687298,
 527023721684738304,20605894357093102434,
 861761850029367846400,38387125875316048363386,
 1814541564588778500135936]