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”).

A303995 as a simple table

na(n)
11
23210
33498
43882
56453804
67873684
77943640
88028120
98099880
109112230
119561990
1210079430
13182626920
14192651480
15196192920
16199939320
17200271960
18201632760
19203289240
20206367480
21206645880
22207815160
23208955160
24210368760
25210406680
26210717720
27211645560

[1,3210,3498,3882,6453804,7873684,7943640,8028120,
 8099880,9112230,9561990,10079430,182626920,
 192651480,196192920,199939320,200271960,201632760,
 203289240,206367480,206645880,207815160,208955160,
 210368760,210406680,210717720,211645560]