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A024167 as a simple table

na(n)
11
21
35
414
594
6444
73828
825584
9270576
102342880
1129400480
12312888960
134546558080
1457424792320
15948550176000
1613869128448000
17256697973504000
184264876094976000
1987435019510272000
201627055289796608000
2136601063093905408000
22754132445894209536000

[1,1,5,14,94,444,3828,25584,270576,2342880,
 29400480,312888960,4546558080,57424792320,
 948550176000,13869128448000,256697973504000,
 4264876094976000,87435019510272000,
 1627055289796608000,36601063093905408000,
 754132445894209536000]