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”).

A289574 as a simple table

na(n)
01
12
26
313
429
557
6121
7240
8496
91000
102017
114057
128137
1316294
1432646
1565401
16130929
17261649
18523918
191047681
202096413
214192389
228387170
2316773805
2433551370
2567102081
26134211974
27268421638
28536858721
291073709201
302147459221
314294911850
328589870852

[1,2,6,13,29,57,121,240,496,1000,2017,4057,8137,
 16294,32646,65401,130929,261649,523918,1047681,
 2096413,4192389,8387170,16773805,33551370,
 67102081,134211974,268421638,536858721,1073709201,
 2147459221,4294911850,8589870852]