login

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”).

A240037 as a simple table

na(n)
18
28
344
462
5178
6282
7710
81074
92770
104162
1110836
1215764
1341374
1459680
15156886
16225150
17588814
18847438
192209382
203180402
218266052
2211933946
2330940004
2444734494
25115726028
26167666138
27433004540
28628085454
291619697032
302352404846

[8,8,44,62,178,282,710,1074,2770,4162,10836,15764,
 41374,59680,156886,225150,588814,847438,2209382,
 3180402,8266052,11933946,30940004,44734494,
 115726028,167666138,433004540,628085454,
 1619697032,2352404846]