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A027961 as a simple table

na(n)
11
24
38
415
526
644
773
8120
9196
10319
11518
12840
131361
142204
153568
165775
179346
1815124
1924473
2039600
2164076
22103679
23167758
24271440
25439201
26710644
271149848
281860495
293010346
304870844
317881193
3212752040
3320633236
3433385279
3554018518

[1,4,8,15,26,44,73,120,196,319,518,840,1361,2204,
 3568,5775,9346,15124,24473,39600,64076,103679,
 167758,271440,439201,710644,1149848,1860495,
 3010346,4870844,7881193,12752040,20633236,
 33385279,54018518]