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”).

A253179 as a simple table

na(n)
11
2-1
30
40
50
62
7-4
80
90
102
11-2
120
130
144
156
160
170
180
19-2
200
210
222
23-6
240
250
266
270
280
290
30-4
31-12
320
330
344
354
360
370
386
3912
400
410
42-4
430
440
450
464
47-10
480
490
500
514
520
530
540
5518
560
570
582
59-6
600
610
628
630
640
650
66-8
672
680
690
70-4
71-14
720
730
7410
750
760
770
78-4
79-22
800
810
824
83-4
840
850
8610
8714
880
890
900
912
920
930
948
9514
960
970
980
990
1000
1010
102-4
103-22
1040
1050

[1,-1,0,0,0,2,-4,0,0,2,-2,0,0,4,6,0,0,0,-2,0,0,2,
 -6,0,0,6,0,0,0,-4,-12,0,0,4,4,0,0,6,12,0,0,-4,0,0,
 0,4,-10,0,0,0,4,0,0,0,18,0,0,2,-6,0,0,8,0,0,0,-8,
 2,0,0,-4,-14,0,0,10,0,0,0,-4,-22,0,0,4,-4,0,0,10,
 14,0,0,0,2,0,0,8,14,0,0,0,0,0,0,-4,-22,0,0]