A167053 - cp's OEIS frontend

A167053 a(1)=3; for n > 1, a(n) = 1 + a(n-1) + gcd( a(n-1)*(a(n-1)+2), A073829(a(n-1)) ).

n	a(n)
1	3
2	19
3	39
4	81
5	165
6	333
7	335
8	673
9	1347
10	1349
11	1351
12	1353
13	1355
14	1357
15	1359
16	2721
17	2723
18	2725
19	2727
20	5457
21	5459
22	5461
23	5463
24	5465
25	5467
26	5469
27	10941
28	10943
29	10945
30	10947
31	21897
32	21899
33	21901
34	21903
35	21905
36	21907
37	21909
38	43821
39	43823
40	43825
41	43827
42	43829
43	43831

[3, 19, 39, 81, 165, 333, 335, 673, 1347, 1349, 1351, 1353, 1355, 1357, 1359, 2721, 2723, 2725, 2727, 5457, 5459, 5461, 5463, 5465, 5467, 5469, 10941, 10943, 10945, 10947, 21897, 21899, 21901, 21903, 21905, 21907, 21909, 43821, 43823, 43825, 43827, 43829, 43831]

cp's OEIS Frontend

A167053 a(1)=3; for n > 1, a(n) = 1 + a(n-1) + gcd( a(n-1)*(a(n-1)+2), A073829(a(n-1)) ).

Table of values

List of values