A008602 - OEIS

A008602 as a simple table

n	a(n)
0	0
1	20
2	40
3	60
4	80
5	100
6	120
7	140
8	160
9	180
10	200
11	220
12	240
13	260
14	280
15	300
16	320
17	340
18	360
19	380
20	400
21	420
22	440
23	460
24	480
25	500
26	520
27	540
28	560
29	580
30	600
31	620
32	640
33	660
34	680
35	700
36	720
37	740
38	760
39	780
40	800
41	820
42	840
43	860
44	880
45	900
46	920
47	940
48	960
49	980
50	1000

[0,20,40,60,80,100,120,140,160,180,200,220,240, 260,280,300,320,340,360,380,400,420,440,460,480, 500,520,540,560,580,600,620,640,660,680,700,720, 740,760,780,800,820,840,860,880,900,920,940,960, 980,1000]