A334898 - cp's OEIS frontend

A334898 Bi-unitary practical numbers: numbers m such that every number 1 <= k <= bsigma(m) is a sum of distinct bi-unitary divisors of m, where bsigma is A188999.

n	a(n)
1	1
2	2
3	6
4	8
5	24
6	30
7	32
8	40
9	42
10	48
11	54
12	56
13	66
14	72
15	78
16	88
17	96
18	104
19	120
20	128
21	160
22	168
23	192
24	210
25	216
26	224
27	240
28	264
29	270
30	280
31	288
32	312
33	320
34	330
35	336
36	352
37	360
38	378
39	384
40	390
41	408
42	416
43	432
44	440
45	448
46	456
47	462
48	480
49	486
50	504
51	510
52	512
53	520
54	528
55	544
56	546
57	552

[1, 2, 6, 8, 24, 30, 32, 40, 42, 48, 54, 56, 66, 72, 78, 88, 96, 104, 120, 128, 160, 168, 192, 210, 216, 224, 240, 264, 270, 280, 288, 312, 320, 330, 336, 352, 360, 378, 384, 390, 408, 416, 432, 440, 448, 456, 462, 480, 486, 504, 510, 512, 520, 528, 544, 546, 552]

cp's OEIS Frontend

A334898 Bi-unitary practical numbers: numbers m such that every number 1 <= k <= bsigma(m) is a sum of distinct bi-unitary divisors of m, where bsigma is A188999.

Table of values

List of values

n	a(n)
1	1
2	2
3	6
4	8
5	24
6	30
7	32
8	40
9	42
10	48
11	54
12	56
13	66
14	72
15	78
16	88
17	96
18	104
19	120
20	128
21	160
22	168
23	192
24	210
25	216
26	224
27	240
28	264
29	270
30	280
31	288
32	312
33	320
34	330
35	336
36	352
37	360
38	378
39	384
40	390
41	408
42	416
43	432
44	440
45	448
46	456
47	462
48	480
49	486
50	504
51	510
52	512
53	520
54	528
55	544
56	546
57	552

n	a(n)
1	1
2	2
3	6
4	8
5	24
6	30
7	32
8	40
9	42
10	48
11	54
12	56
13	66
14	72
15	78
16	88
17	96
18	104
19	120
20	128
21	160
22	168
23	192
24	210
25	216
26	224
27	240
28	264
29	270
30	280
31	288
32	312
33	320
34	330
35	336
36	352
37	360
38	378
39	384
40	390
41	408
42	416
43	432
44	440
45	448
46	456
47	462
48	480
49	486
50	504
51	510
52	512
53	520
54	528
55	544
56	546
57	552

n	a(n)
1	1
2	2
3	6
4	8
5	24
6	30
7	32
8	40
9	42
10	48
11	54
12	56
13	66
14	72
15	78
16	88
17	96
18	104
19	120
20	128
21	160
22	168
23	192
24	210
25	216
26	224
27	240
28	264
29	270
30	280
31	288
32	312
33	320
34	330
35	336
36	352
37	360
38	378
39	384
40	390
41	408
42	416
43	432
44	440
45	448
46	456
47	462
48	480
49	486
50	504
51	510
52	512
53	520
54	528
55	544
56	546
57	552