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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A118387 as a simple table

na(n)
11
22
35
415
533
640
7132
8220
9352
101258
112661
123903
139787
1412989
1517961
1631373
1733076
1855262
19110624

[1,2,5,15,33,40,132,220,352,1258,2661,3903,9787,
 12989,17961,31373,33076,55262,110624]