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A374262 as a simple table

na(n)
01
11
21
31
44
516
646
7106
8316
93564
1027756
11141516
12556656
136678816
1473015944
15521124696
166144018336
1775200767776
18677927254176
194642387894944
2075217104395136
211167068528384256
2212348761954020416
2397377968145352896
24882819252604721664
2566882151986021043200

[1,1,1,1,4,16,46,106,316,3564,27756,141516,556656,
 6678816,73015944,521124696,6144018336,75200767776,
 677927254176,4642387894944,75217104395136,
 1167068528384256,12348761954020416,
 97377968145352896,882819252604721664,
 66882151986021043200]