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A272530 as a simple table

na(n)
10
23
37
427
515
6427
755
831
9215
10219
11111
12119
1363
14431
15443
16471
17439
18223
19239
201879
21127
221719
23863
241755
25891
26887
27879
283423
29447
30495
31479
323451
333447
34255
353439
363503
371727
3827355
391967
401787
411775
4214167
431783
441759
451911
461903
47895
487855
49991
50959
516907
526895
537087
5455983
55511
567099
576879
5814043
597007
603455

[0,3,7,27,15,427,55,31,215,219,111,119,63,431,443,
 471,439,223,239,1879,127,1719,863,1755,891,887,
 879,3423,447,495,479,3451,3447,255,3439,3503,1727,
 27355,1967,1787,1775,14167,1783,1759,1911,1903,
 895,7855,991,959,6907,6895,7087,55983,511,7099,
 6879,14043,7007,3455]