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”).

A290818 as a simple table

na(n)
12
23
33
44
511
64
75
824
924
105
116
1247
1394
1447
156
167
1788
18272
19272
2088
217
228
23163
24774
251185
26774
27163
288
299
30304
312230
324280
334280
342230
35304
369
3710
38575
396542
4015781
4120106
4215781
436542
44575
4510
4611
471104
4819452
4960604
5088512
5188512
5260604
5319452
541104
5511

[2,3,3,4,11,4,5,24,24,5,6,47,94,47,6,7,88,272,272,
 88,7,8,163,774,1185,774,163,8,9,304,2230,4280,
 4280,2230,304,9,10,575,6542,15781,20106,15781,
 6542,575,10,11,1104,19452,60604,88512,88512,60604,
 19452,1104,11]