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A042691 as a simple table

na(n)
01
11
22
35
47
512
619
731
8112
9143
10255
11398
12653
131704
142357
154061
16237895
17241956
18479851
191201658
201681509
212883167
224564676
237447843
2426908205
2534356048
2661264253
2795620301
28156884554
29409389409
30566273963
31975663372
3257154749539
3358130412911
34115285162450

[1,1,2,5,7,12,19,31,112,143,255,398,653,1704,2357,
 4061,237895,241956,479851,1201658,1681509,2883167,
 4564676,7447843,26908205,34356048,61264253,
 95620301,156884554,409389409,566273963,975663372,
 57154749539,58130412911,115285162450]