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.

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.

Terms

    a(0) =1a(1) =2a(2) =9a(3) =12a(4) =48a(5) =216a(6) =288a(7) =1152a(8) =5184a(9) =6912a(10) =27648a(11) =124416a(12) =165888a(13) =663552a(14) =2985984a(15) =3981312a(16) =15925248a(17) =71663616a(18) =95551488a(19) =382205952a(20) =1719926784a(21) =2293235712a(22) =9172942848a(23) =41278242816a(24) =55037657088a(25) =220150628352a(26) =990677827584

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