A036471 - cp's OEIS frontend

A036471 Four numbers (a,b,c,d) with a that satisfy sigma(a) = sigma(b) = sigma(c) = sigma(d) = a+b+c+d are called an amicable quadruple. We order these quadruples according to the common value of sigma. The values of (a, b, c, d, sigma) are in (this sequence, A036472, A036473, A036474, A116148) respectively.

n	a(n)
1	3270960
2	3767400
3	4651920
4	4969440
5	5682600
6	5405400
7	6514200
8	6126120
9	6126120
10	6320160
11	6977880
12	7013160
13	6819120
14	6966960
15	7706160
16	7731360
17	7469280
18	7469280
19	8353800
20	8288280
21	8316000
22	9258480
23	9009000
24	10048500
25	9840600
26	9923760
27	9563400

[3270960, 3767400, 4651920, 4969440, 5682600, 5405400, 6514200, 6126120, 6126120, 6320160, 6977880, 7013160, 6819120, 6966960, 7706160, 7731360, 7469280, 7469280, 8353800, 8288280, 8316000, 9258480, 9009000, 10048500, 9840600, 9923760, 9563400]

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Table of values

List of values