A293542 - cp's OEIS frontend

A293542 a(1)=1; for n>1, a(n) = least integer greater than a(n-1) such that the sums of the divisors of the pairwise sums of a(1),...,a(n) are all distinct.

n	a(n)
1	1
2	2
3	4
4	8
5	19
6	28
7	56
8	72
9	101
10	144
11	202
12	240
13	261
14	448
15	511
16	602
17	772
18	806
19	1152
20	1296
21	1541
22	1602
23	2016
24	2256
25	2900
26	3322
27	3362
28	3978
29	4376
30	5887
31	6416
32	7702
33	8228
34	8578
35	11341
36	11382
37	13376
38	13692
39	16083
40	16380
41	16544
42	17382
43	22726
44	24944
45	26302
46	27508
47	30580
48	33184
49	34020
50	37474

[1, 2, 4, 8, 19, 28, 56, 72, 101, 144, 202, 240, 261, 448, 511, 602, 772, 806, 1152, 1296, 1541, 1602, 2016, 2256, 2900, 3322, 3362, 3978, 4376, 5887, 6416, 7702, 8228, 8578, 11341, 11382, 13376, 13692, 16083, 16380, 16544, 17382, 22726, 24944, 26302, 27508, 30580, 33184, 34020, 37474]

cp's OEIS Frontend

A293542 a(1)=1; for n>1, a(n) = least integer greater than a(n-1) such that the sums of the divisors of the pairwise sums of a(1),...,a(n) are all distinct.

Table of values

List of values