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A318062 as a simple table

na(n)
11
25
318
467
5249
6925
73437
812770
947447
10176289
11655001
122433653
139042226
1433596347
15124827065
16463794357
171723225693
186402636738
1923788965871
2088387787777
21328404398513
221220184956261
234533591310674
2416844536614515

[1,5,18,67,249,925,3437,12770,47447,176289,655001,
 2433653,9042226,33596347,124827065,463794357,
 1723225693,6402636738,23788965871,88387787777,
 328404398513,1220184956261,4533591310674,
 16844536614515]