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”).

A033240 as a simple table

na(n)
171
2257
3503
4607
5727
6919
7977
81087
91151
101217
111399
121433
131559
141583
151721
161783
172081
182087
192239
202273
212281
222521
232593
242663
252767
262857
273119
283457
293583
303593
313767
324049
334127
344217
354241

[71,257,503,607,727,919,977,1087,1151,1217,1399,
 1433,1559,1583,1721,1783,2081,2087,2239,2273,2281,
 2521,2593,2663,2767,2857,3119,3457,3583,3593,3767,
 4049,4127,4217,4241]