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A045987 as a simple table

n a(n)
0 11
1 12
2 14
3 18
4 1116
5 1312
6 1614
7 111218
8 121516
9 151112
10 11101214
11 12101418
12 14101916
13 18111912
14 1116131814
15 1312171618
16 16251316
17 111311101712
18 1216121124
19 1512141228
20 11101418151716
21 12101917111512
22 14111914131014

[11,12,14,18,1116,1312,1614,111218,121516,151112,
 11101214,12101418,14101916,18111912,1116131814,
 1312171618,16251316,111311101712,1216121124,
 1512141228,11101418151716,12101917111512,
 14111914131014]

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Last modified January 25 17:35 EST 2022. Contains 350572 sequences. (Running on oeis4.)