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A065601 as a simple table

na(n)
00
11
20
32
44
513
640
7130
8432
91466
105056
1117672
1262460
13222853
14801592
152903626
1610582816
1738781310
18142805056
19528134764
201960825672
217305767602
2227307800400
23102371942932
24384806950624
251450038737668
265476570993440
2720727983587220
2878606637060012

[0,1,0,2,4,13,40,130,432,1466,5056,17672,62460,
 222853,801592,2903626,10582816,38781310,142805056,
 528134764,1960825672,7305767602,27307800400,
 102371942932,384806950624,1450038737668,
 5476570993440,20727983587220,78606637060012]