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A027631 as a simple table

na(n)
01
11
24
36
415
524
649
778
8141
9219
10364
11550
12861
131261
141884
152682
163856
175350
187452
1910100
2013699
2118183
2224104
2331404
2440816
2552297
2666809
2784334
28106110
29132164
30164062
31201896
32247626
33301429
34365727
35440818
36529656
37632693

[1,1,4,6,15,24,49,78,141,219,364,550,861,1261,
 1884,2682,3856,5350,7452,10100,13699,18183,24104,
 31404,40816,52297,66809,84334,106110,132164,
 164062,201896,247626,301429,365727,440818,529656,
 632693]