A076505 - cp's OEIS frontend

A076505 3 people at a party are saying Hello to each other. Person 1 says Hello. Person 2 counts the times Hello has been said and says Hello twice that number. Person 3 says Hello 3 times the sum of Hello's and then it is Person 1 again. This is how many Hello's each person says.

n	a(n)
1	1
2	2
3	9
4	12
5	48
6	216
7	288
8	1152
9	5184
10	6912
11	27648
12	124416
13	165888
14	663552
15	2985984
16	3981312
17	15925248
18	71663616
19	95551488
20	382205952
21	1719926784
22	2293235712
23	9172942848
24	41278242816
25	55037657088
26	220150628352
27	990677827584

[1, 2, 9, 12, 48, 216, 288, 1152, 5184, 6912, 27648, 124416, 165888, 663552, 2985984, 3981312, 15925248, 71663616, 95551488, 382205952, 1719926784, 2293235712, 9172942848, 41278242816, 55037657088, 220150628352, 990677827584]

cp's OEIS Frontend

A076505 3 people at a party are saying Hello to each other. Person 1 says Hello. Person 2 counts the times Hello has been said and says Hello twice that number. Person 3 says Hello 3 times the sum of Hello's and then it is Person 1 again. This is how many Hello's each person says.

Table of values

List of values