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”).

A138758 as a simple table

na(n)
12
24
30
40
50
60
70
80
91
100
112
120
130
141
150
160
171
181
191
201
210
220
231
240
250
260
272
286
290
300
311
320
330
340
350
361
371
380
392
403
410
420
430
440
450
464
470
481
492
504
510
521
530
540
550
560
570
580
592
600
610
620
630
640
651
660
670
680
690
703
711
721
732
740
751
760
770
780
790
800
810
820
830
840
851
861
870
880
890
901
910
920
931
940
952
960
971
980
990
1000
1011
1023
1030
1040
1051

[2,4,0,0,0,0,0,0,1,0,2,0,0,1,0,0,1,1,1,1,0,0,1,0,
 0,0,2,6,0,0,1,0,0,0,0,1,1,0,2,3,0,0,0,0,0,4,0,1,2,
 4,0,1,0,0,0,0,0,0,2,0,0,0,0,0,1,0,0,0,0,3,1,1,2,0,
 1,0,0,0,0,0,0,0,0,0,1,1,0,0,0,1,0,0,1,0,2,0,1,0,0,
 0,1,3,0,0,1]