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Number of partitions of n such that the (sum of distinct even parts) < n/2.
4

%I #4 Apr 03 2017 20:31:57

%S 1,1,2,2,6,8,11,14,23,29,38,48,81,102,131,163,235,293,364,448,622,762,

%T 933,1134,1571,1906,2311,2784,3682,4425,5305,6339,8219,9796,11648,

%U 13808,17543,20743,24484,28817,36600,43025,50477,59101,73401,85788,100085

%N Number of partitions of n such that the (sum of distinct even parts) < n/2.

%e a(4) counts these 2 partitions: 31, 1111.

%t Table[p = IntegerPartitions[n];

%t Length[Select[Table[Total[Select[DeleteDuplicates[p[[k]]], EvenQ]], {k,

%t Length[p]}], # < n/2 &]], {n, 54}]

%Y Cf. A284617, A284618, A284619.

%K nonn,easy

%O 1,3

%A _Clark Kimberling_, Apr 02 2017

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Last modified September 24 12:17 EDT 2024. Contains 376196 sequences. (Running on oeis4.)