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A137021 as a simple table

n a(n)
1 1
2 4
3 6
4 34
5 56
6 66
7 116
8 334
9 666
10 1146
11 1156
12 3334
13 3656
14 6454
15 6666
16 11556
17 33334
18 36556
19 66454
20 66666
21 116454
22 333334
23 561556
24 643546
25 666666
26 1163466
27 1164631
28 3333334
29 3341354
30 3363646
31 3651454
32 3655334
33 5616454
34 6446434
35 6454116
36 6666666
37 11463556
38 11463566
39 33333334
40 56135146
41 64463566
42 64463646
43 66666666
44 115613646
45 116366454

[1,4,6,34,56,66,116,334,666,1146,1156,3334,3656,
 6454,6666,11556,33334,36556,66454,66666,116454,
 333334,561556,643546,666666,1163466,1164631,
 3333334,3341354,3363646,3651454,3655334,5616454,
 6446434,6454116,6666666,11463556,11463566,
 33333334,56135146,64463566,64463646,66666666,
 115613646,116366454]

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Last modified December 1 22:12 EST 2021. Contains 349435 sequences. (Running on oeis4.)