login

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”).

A199579 as a simple table

na(n)
01
14
228
3232
42056
518784
6174112
71625152
815220288
9142777600
101340416768
1112588825088
12118252556800
131110898849792
1410436554713088
1598050271875072
16921180638875648
178654518327066624
1881309636020912128

[1,4,28,232,2056,18784,174112,1625152,15220288,
 142777600,1340416768,12588825088,118252556800,
 1110898849792,10436554713088,98050271875072,
 921180638875648,8654518327066624,
 81309636020912128]