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A274018 as a simple table

na(n)
01
13
26
310
421
542
6103
7237
8603
91519
103942
1110257
1227131
1371940
14192462
15516933
161395636
173781356
1810283911
1928050600
2076732047
21210414811
22578330649
231592821005
244395261552
2512149386569
2633637309323
2793267459520
28258961863288
29719938597227
302003881480452
315583818718102
3215575529493713

[1,3,6,10,21,42,103,237,603,1519,3942,10257,27131,
 71940,192462,516933,1395636,3781356,10283911,
 28050600,76732047,210414811,578330649,1592821005,
 4395261552,12149386569,33637309323,93267459520,
 258961863288,719938597227,2003881480452,
 5583818718102,15575529493713]