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A272633 as a simple table

na(n)
00
11
22
34
46
57
67
713
813
913
1019
1119
1219
1323
1423
1523
1631
1731
1831
1933
2037
2137
2243
2343
2447
2549
2653
2753
2853
2955
3061
3163
3267
3373
3473
3575
3675
3779
3883
3983
4089
4189
4291
4391
4497
45103
46103
47109
48113
49113
50115
51117
52119
53121
54121
55121
56121
57121
58139
59139
60141
61141
62151
63153
64157
65157
66159
67167
68169
69169
70175
71181
72181
73183
74187

[0,1,2,4,6,7,7,13,13,13,19,19,19,23,23,23,31,31,
 31,33,37,37,43,43,47,49,53,53,53,55,61,63,67,73,
 73,75,75,79,83,83,89,89,91,91,97,103,103,109,113,
 113,115,117,119,121,121,121,121,121,139,139,141,
 141,151,153,157,157,159,167,169,169,175,181,181,
 183,187]