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A131893 as a simple table

na(n)
01
11
27
321
435
535
621
77
81
949
101029
1112005
1284035
13352947
14823543
15823543
1617294403
17155649627
18778248135
192334744405
204202539929
214202539929
221801088541
2321012699645
24105063498225
25291843050625
26486405084375
27486405084375
28270225046875
2964339296875

[1,1,7,21,35,35,21,7,1,49,1029,12005,84035,352947,
 823543,823543,17294403,155649627,778248135,
 2334744405,4202539929,4202539929,1801088541,
 21012699645,105063498225,291843050625,
 486405084375,486405084375,270225046875,
 64339296875]