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A300501 as a simple table

na(n)
13
22
34
47
56
617
734
857
980
10164
11302
12526
13885
141647
152996
165296
179259
1816753
1930075
2053468
2194738
22169873
23303898
24541631
25964444
261724067
273079837
285493915
299797538
3017495715
3131235953
3255738172
3399453077
34177534256
35316897514
36565552854

[3,2,4,7,6,17,34,57,80,164,302,526,885,1647,2996,
 5296,9259,16753,30075,53468,94738,169873,303898,
 541631,964444,1724067,3079837,5493915,9797538,
 17495715,31235953,55738172,99453077,177534256,
 316897514,565552854]