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”).

A113406 as a simple table

na(n)
11
20
30
42
52
60
70
82
91
100
110
120
132
140
150
162
172
180
190
204
210
220
230
240
253
260
270
280
292
300
310
322
330
340
350
362
372
380
390
404
412
420
430
440
452
460
470
480
491
500
510
524
532
540
550
560
570
580
590
600
612
620
630
642
654
660
670
684
690
700
710
722
732
740
750
760
770
780
790
804
811
820
830
840
854
860
870
880
892
900
910
920
930
940
950
960
972
980
990
1006
1012
1020
1030
1044
1050

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