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”).

A056652 as a simple table

na(n)
13
27
39
421
527
631
749
863
981
1093
11127
12147
13189
14217
15243
16279
17343
18381
19441
20567
21651
22729
23837
24889
25961
261029
271143
281323
291519
301701
311953
322187
332401
342511
352667
362883
373087
383429
393937
403969
414557
425103
435859
446223
456561
466727
477203
487533
498001
508191
518649
529261

[3,7,9,21,27,31,49,63,81,93,127,147,189,217,243,
 279,343,381,441,567,651,729,837,889,961,1029,1143,
 1323,1519,1701,1953,2187,2401,2511,2667,2883,3087,
 3429,3937,3969,4557,5103,5859,6223,6561,6727,7203,
 7533,8001,8191,8649,9261]