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”).

A377661 as a simple table

na(n)
01
12
21
35
48
51
616
745
818
91
1065
11256
12180
1332
141
15326
161625
171600
18500
1950
201
211957
2211736
2314625
246400
251125
2672
271
2813700
2995893
30143766
3179625
3219600
332205
3498
351
36109601
37876800
381534288
391022336
40318500
4150176
423920
43128
441

[1,2,1,5,8,1,16,45,18,1,65,256,180,32,1,326,1625,
 1600,500,50,1,1957,11736,14625,6400,1125,72,1,
 13700,95893,143766,79625,19600,2205,98,1,109601,
 876800,1534288,1022336,318500,50176,3920,128,1]