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A123573 as a simple table

na(n)
00
14
27
39
410
510
613
715
816
916
1018
1119
1219
1320
1420
1520
1623
1725
1826
1926
2028
2129
2229
2330
2430
2530
2632
2733
2833
2934
3034
3134
3235
3335
3435
3535
3638
3740
3841
3941
4043
4144
4244
4345
4445
4545
4647
4748
4848
4949
5049
5149
5250
5350
5450
5550
5652
5753
5853
5954
6054
6154
6255
6355
6455
6555
6656
6756
6856
6956
7056

[0,4,7,9,10,10,13,15,16,16,18,19,19,20,20,20,23,
 25,26,26,28,29,29,30,30,30,32,33,33,34,34,34,35,
 35,35,35,38,40,41,41,43,44,44,45,45,45,47,48,48,
 49,49,49,50,50,50,50,52,53,53,54,54,54,55,55,55,
 55,56,56,56,56,56]