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”).

A061506 as a simple table

na(n)
012
1120
21008
31320
45460
54896
615960
712144
835100
924360
1065472
1142840
12109668
1368880
14170280
15103776
16249900
17148824
18351120
19205320
20476532
21274560
22628728
23357840
24810300
25456456
261023840
27571704
281271940
29704880
301557192
31857280
321882188
331030200

[12,120,1008,1320,5460,4896,15960,12144,35100,
 24360,65472,42840,109668,68880,170280,103776,
 249900,148824,351120,205320,476532,274560,628728,
 357840,810300,456456,1023840,571704,1271940,
 704880,1557192,857280,1882188,1030200]