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A216980 as a simple table

n a(n)
1 0
2 1
3 9
4 21
5 53
6 63
7 99
8 123
9 141
10 155
11 185
12 213
13 315
14 363
15 375
16 449
17 513
18 521
19 543
20 555
21 653
22 669
23 699
24 731
25 735
26 759
27 801
28 843
29 881
30 975
31 983
32 995
33 1031
34 1095
35 1115
36 1131
37 1149
38 1161
39 1221
40 1253
41 1395
42 1413
43 1451
44 1473
45 1491
46 1571
47 1599
48 1625
49 1659
50 1733

[0,1,9,21,53,63,99,123,141,155,185,213,315,363,
 375,449,513,521,543,555,653,669,699,731,735,759,
 801,843,881,975,983,995,1031,1095,1115,1131,1149,
 1161,1221,1253,1395,1413,1451,1473,1491,1571,1599,
 1625,1659,1733]

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Last modified March 28 12:26 EDT 2024. Contains 371254 sequences. (Running on oeis4.)