A114528 - cp's OEIS frontend

A114528 Let S(n)=sigma(|n|)-3*n; sequence gives numbers n such that S(S(S(S(n))))=n. May be called {3,1}-Sociable number of orders 1 or 2 or 4.

n	a(n)
1	1248
2	1596
3	28272
4	30240
5	32760
6	463296
7	678032
8	1906128
9	2178540
10	4694328
11	4697616
12	4698072
13	11110976
14	12865770
15	23569920
16	30998250
17	31235904
18	37501072
19	45532800
20	63723600
21	76980288
22	95801088
23	142990848
24	146078592
25	163032720
26	614533696
27	1044244800
28	1379454720

[1248, 1596, 28272, 30240, 32760, 463296, 678032, 1906128, 2178540, 4694328, 4697616, 4698072, 11110976, 12865770, 23569920, 30998250, 31235904, 37501072, 45532800, 63723600, 76980288, 95801088, 142990848, 146078592, 163032720, 614533696, 1044244800, 1379454720]

cp's OEIS Frontend

A114528 Let S(n)=sigma(|n|)-3*n; sequence gives numbers n such that S(S(S(S(n))))=n. May be called {3,1}-Sociable number of orders 1 or 2 or 4.

Table of values

List of values