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A251737 as a simple table

na(n)
01
11
23
35
417
566
6181
7508
81283
93664
1010812
1131171
1288565
13245524
14692416
151968532
165609977
1715928174
1844982196
19127190716
20360208608
211021611491
222896270245
238202605953
2423226285083
2565780006703
26186369631872
27528047092459
281495905404102
294237308534243

[1,1,3,5,17,66,181,508,1283,3664,10812,31171,
 88565,245524,692416,1968532,5609977,15928174,
 44982196,127190716,360208608,1021611491,
 2896270245,8202605953,23226285083,65780006703,
 186369631872,528047092459,1495905404102,
 4237308534243]