Expansion of Sum_{k>=0} 2^k*x^(2k)/Product_{j=1..k} (1 - j*2x).

A119430

Expansion of Sum_{k>=0} 2^k*x^(2k)/Product_{j=1..k} (1 - j*2x).

Terms

    a(0) =1a(1) =0a(2) =2a(3) =4a(4) =12a(5) =40a(6) =152a(7) =640a(8) =2928a(9) =14400a(10) =75744a(11) =424640a(12) =2527552a(13) =15902848a(14) =105313408a(15) =731376640a(16) =5311088896a(17) =40233525248a(18) =317296341504

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