A277684 - OEIS

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A277684 as a simple table

n	a(n)
1	0
2	6
3	17
4	18
5	69
6	70
7	297
8	298
9	299
10	300
11	301
12	302
13	303
14	304
15	305
16	306
17	307
18	464
19	465
20	466
21	467
22	624
23	625
24	1810
25	1811
26	1812

[0,6,17,18,69,70,297,298,299,300,301,302,303,304, 305,306,307,464,465,466,467,624,625,1810,1811, 1812]