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”).

A353901 as a simple table

na(n)
11
26
328
456
51104
62208
72178540
84357080
96499584
1012999168

[1,6,28,56,1104,2208,2178540,4357080,6499584,
 12999168]