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A007813 as a simple table

na(n)
11
22
34
48
516
632
759
875
965
1056
1150
1244
1336
1431
1527
1626
1726
1826
1926
2026
2126
2226
2326
2426
2526
2626
2726
2826
2926
3026
3126
3226
3326
3426
3526
3626
3726
3826
3926
4026
4126
4226
4326
4426
4526
4626
4726
4826
4926
5026
5126
5226
5326
5426
5526
5626
5726
5826
5926
6026
6126
6226
6326
6426
6526
6626
6726
6826
6926
7026
7126
7226
7326
7426
7526
7626
7726
7826

[1,2,4,8,16,32,59,75,65,56,50,44,36,31,27,26,26,
 26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,
 26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,
 26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,26,
 26,26,26,26,26,26,26,26,26,26,26,26,26]