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A293351 as a simple table

na(n)
01
13
27
316
431
557
6101
7173
8291
9483
10795
111301
122121
133449
145600
159081
1614715
1723832
1838585
1962457
20101084
21163585
22264715
23428348
24693113
251121513
261814680
272936249
284750988
297687298
3012438349
3120125712
3232564128
3352689909
3485254108
35137944090

[1,3,7,16,31,57,101,173,291,483,795,1301,2121,
 3449,5600,9081,14715,23832,38585,62457,101084,
 163585,264715,428348,693113,1121513,1814680,
 2936249,4750988,7687298,12438349,20125712,
 32564128,52689909,85254108,137944090]