A037708 - OEIS

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A037708 as a simple table

n	a(n)
1	1
2	13
3	130
4	1302
5	13021
6	130213
7	1302130
8	13021302
9	130213021
10	1302130213
11	13021302130
12	130213021302
13	1302130213021
14	13021302130213
15	130213021302130
16	1302130213021302

[1,13,130,1302,13021,130213,1302130,13021302, 130213021,1302130213,13021302130,130213021302, 1302130213021,13021302130213,130213021302130, 1302130213021302]