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A050339 Number of factorizations with 2 levels of parentheses indexed by prime signatures. A050338(A025487). 4

%I

%S 1,1,4,4,10,16,30,54,22,75,74,176,102,206,267,535,399,518,950,526,

%T 1585,154,1094,1446,1344,3091,2252,4527,817,4158,4879,3357,9809,8811,

%U 12664,3605,14653,3005,15738,8429,10479,29762,4777,16863,31883,34631

%N Number of factorizations with 2 levels of parentheses indexed by prime signatures. A050338(A025487).

%K nonn

%O 1,3

%A _Christian G. Bower_, Oct 15 1999

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Last modified January 19 12:36 EST 2020. Contains 331049 sequences. (Running on oeis4.)