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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A178986 as a simple table

na(n)
11
20
30
40
50
60
70
80
90
100
1144
120
131092
140
150
160
1716932
180
1924776
200
210
220
231881492
240

[1,0,0,0,0,0,0,0,0,0,44,0,1092,0,0,0,16932,0,
 24776,0,0,0,1881492,0]