A229996 - cp's OEIS frontend

A229996 For every positive integer m, let u(m) = (d(1),d(2),...,d(k)) be the unitary divisors of m. The sequence (a(n)) consists of successive numbers m which d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1) is an integer.

n	a(n)
1	1
2	10
3	65
4	130
5	260
6	340
7	1105
8	1972
9	2210
10	4420
11	8840
12	9860
13	15650
14	20737
15	32045
16	41474
17	44200
18	51272
19	55250
20	64090
21	75140
22	82948
23	103685
24	128180
25	207370
26	207553
27	221000
28	256360
29	352529
30	414740
31	415106
32	512720
33	532100
34	705058
35	759025
36	813800
37	829480
38	830212

[1, 10, 65, 130, 260, 340, 1105, 1972, 2210, 4420, 8840, 9860, 15650, 20737, 32045, 41474, 44200, 51272, 55250, 64090, 75140, 82948, 103685, 128180, 207370, 207553, 221000, 256360, 352529, 414740, 415106, 512720, 532100, 705058, 759025, 813800, 829480, 830212]

cp's OEIS Frontend

A229996 For every positive integer m, let u(m) = (d(1),d(2),...,d(k)) be the unitary divisors of m. The sequence (a(n)) consists of successive numbers m which d(k)/d(1) + d(k-1)/d(2) + ... + d(k)/d(1) is an integer.

Table of values

List of values