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A002597 as a simple table

na(n)
01
11
23
36
49
515
625
734
851
973
1097
11132
12178
13226
14294
15376
16466
17582
18722
19872
201062
211282
221522
231812
242147
252507
262937
273422
283947
294557
305243
315978
326825
337763
348771
359912
3611172
3712516
3814028
3915680
4017444
4119404
4221540
4323808
4426316
4529028
4631908

[1,1,3,6,9,15,25,34,51,73,97,132,178,226,294,376,
 466,582,722,872,1062,1282,1522,1812,2147,2507,
 2937,3422,3947,4557,5243,5978,6825,7763,8771,9912,
 11172,12516,14028,15680,17444,19404,21540,23808,
 26316,29028,31908]