login

A020887 as a simple table

na(n)
12
24
36
46
58
610
710
812
912
1014
1114
1216
1318
1418
1520
1620
1722
1822
1924
2024
2126
2226
2328
2428
2530
2630
2730
2830
2932
3034
3134
3236
3336
3438
3538
3640
3740
3842
3942
4042
4142
4244
4344
4446
4546
4648
4748
4850
4950
5052
5152
5254
5354
5456
5556
5658
5758
5860
5960
6060
6160
6262
6362
6464
6566
6666
6766
6866
6968
7068
7170

[2,4,6,6,8,10,10,12,12,14,14,16,18,18,20,20,22,22,
 24,24,26,26,28,28,30,30,30,30,32,34,34,36,36,38,
 38,40,40,42,42,42,42,44,44,46,46,48,48,50,50,52,
 52,54,54,56,56,58,58,60,60,60,60,62,62,64,66,66,
 66,66,68,68,70]