login

A061830 as a simple table

na(n)
00
120
240
360
480
5200
6220
7240
8260
9280
10400
11420
12440
13460
14480
15600
16620
17640
18660
19680
20800
21820
22840
23860
24880
252000
262020
272040
282060
292080
302200
312220
322240
332260
342280
352400
362420
372440
382460
392480
402600
412620
422640
432660
442680
452800
462820
472840

[0,20,40,60,80,200,220,240,260,280,400,420,440,
 460,480,600,620,640,660,680,800,820,840,860,880,
 2000,2020,2040,2060,2080,2200,2220,2240,2260,2280,
 2400,2420,2440,2460,2480,2600,2620,2640,2660,2680,
 2800,2820,2840]