a(n)/2^n is the expected value of the maximum of the number of heads and the number of tails when n fair coins are tossed.

A230137

a(n)/2^n is the expected value of the maximum of the number of heads and the number of tails when n fair coins are tossed.

Terms

    a(0) =0a(1) =2a(2) =6a(3) =18a(4) =44a(5) =110a(6) =252a(7) =588a(8) =1304a(9) =2934a(10) =6380a(11) =14036a(12) =30120a(13) =65260a(14) =138712a(15) =297240a(16) =627248a(17) =1332902a(18) =2796876a(19) =5904516a(20) =12333320a(21) =25899972a(22) =53897096a(23) =112693928a(24) =233776464a(25) =487034300a(26) =1007623032a(27) =2092755528a(28) =4319728784a(29) =8948009624

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