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A023691 as a simple table

na(n)
1511
2767
3895
4959
5991
61007
71015
81019
91021
101022
111279
121407
131471
141503
151519
161527
171531
181533
191534
201663
211727
221759
231775
241783
251787
261789
271790
281855
291887
301903
311911
321915
331917
341918
351951
361967
371975

[511,767,895,959,991,1007,1015,1019,1021,1022,
 1279,1407,1471,1503,1519,1527,1531,1533,1534,1663,
 1727,1759,1775,1783,1787,1789,1790,1855,1887,1903,
 1911,1915,1917,1918,1951,1967,1975]