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”).

A044758 as a simple table

na(n)
145
2145
3245
4345
5445
6459
7545
8645
9745
10845
11945
121045
131145
141245
151345
161445
171459
181545
191645
201745
211845
221945
232045
242145
252245
262345
272445
282459
292545
302645
312745
322845
332945
343045
353145
363245
373345
383445
393459

[45,145,245,345,445,459,545,645,745,845,945,1045,
 1145,1245,1345,1445,1459,1545,1645,1745,1845,1945,
 2045,2145,2245,2345,2445,2459,2545,2645,2745,2845,
 2945,3045,3145,3245,3345,3445,3459]