A286379 - cp's OEIS frontend

A286379 Compound filter ("discard the smallest prime factor" & "signature for 1-runs in base-2"): a(n) = P(A032742(n), A278222(n)), where P(n,k) is sequence A000027 used as a pairing function, with a(1) = 1.

n	a(n)
1	1
2	2
3	7
4	5
5	16
6	18
7	29
8	14
9	31
10	50
11	67
12	42
13	67
14	98
15	195
16	44
17	16
18	100
19	67
20	115
21	637
22	242
23	277
24	117
25	125
26	289
27	955
28	224
29	277
30	450
31	497
32	152
33	131
34	248
35	160
36	271
37	436
38	454
39	643
40	320
41	436
42	1246
43	1771
44	550
45	2716
46	1058
47	1129
48	375
49	160
50	655
51	1343
52	692
53	1771
54	1918
55	3332
56	623
57	880
58	1355
59	2557
60	1020
61	1129
62	1922
63	3507
64	560
65	166
66	736
67	67
68	775
69	1349
70	1070
71	277
72	856
73	436

[1, 2, 7, 5, 16, 18, 29, 14, 31, 50, 67, 42, 67, 98, 195, 44, 16, 100, 67, 115, 637, 242, 277, 117, 125, 289, 955, 224, 277, 450, 497, 152, 131, 248, 160, 271, 436, 454, 643, 320, 436, 1246, 1771, 550, 2716, 1058, 1129, 375, 160, 655, 1343, 692, 1771, 1918, 3332, 623, 880, 1355, 2557, 1020, 1129, 1922, 3507, 560, 166, 736, 67, 775, 1349, 1070, 277, 856, 436]

cp's OEIS Frontend

A286379 Compound filter ("discard the smallest prime factor" & "signature for 1-runs in base-2"): a(n) = P(A032742(n), A278222(n)), where P(n,k) is sequence A000027 used as a pairing function, with a(1) = 1.

Table of values

List of values