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A268349 as a simple table

na(n)
01
12
23
34
420
545
6109
7275
8708
91765
104442
1111196
1228207
1370985
14178755
15450130
161133423
172853888
187186144
1918094709
2045562353
21114725755
22288879164
23727396569
241831581574
254611915224
2611612784735
2729240946181
2873628587619
29185396495082

[1,2,3,4,20,45,109,275,708,1765,4442,11196,28207,
 70985,178755,450130,1133423,2853888,7186144,
 18094709,45562353,114725755,288879164,727396569,
 1831581574,4611915224,11612784735,29240946181,
 73628587619,185396495082]