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A325778 Heinz numbers of integer partitions whose distinct consecutive subsequences have different sums. 11

%I #5 May 21 2019 22:06:06

%S 1,2,3,4,5,6,7,8,9,10,11,13,14,15,16,17,18,19,20,21,22,23,25,26,27,28,

%T 29,31,32,33,34,35,37,38,39,41,42,43,44,45,46,47,49,50,51,52,53,54,55,

%U 56,57,58,59,61,62,64,65,66,67,68,69,71,73,74,75,76,77

%N Heinz numbers of integer partitions whose distinct consecutive subsequences have different sums.

%C First differs from A299702 in having 462.

%C The enumeration of these partitions by sum is given by A325769.

%e Most small numbers are in the sequence. However, the sequence of non-terms together with their prime indices begins:

%e 12: {1,1,2}

%e 24: {1,1,1,2}

%e 30: {1,2,3}

%e 36: {1,1,2,2}

%e 40: {1,1,1,3}

%e 48: {1,1,1,1,2}

%e 60: {1,1,2,3}

%e 63: {2,2,4}

%e 70: {1,3,4}

%e 72: {1,1,1,2,2}

%e 80: {1,1,1,1,3}

%e 84: {1,1,2,4}

%e 90: {1,2,2,3}

%e 96: {1,1,1,1,1,2}

%t primeMS[n_]:=If[n==1,{},Flatten[Cases[FactorInteger[n],{p_,k_}:>Table[PrimePi[p],{k}]]]];

%t Select[Range[100],UnsameQ@@Total/@Union[ReplaceList[primeMS[#],{___,s__,___}:>{s}]]&]

%Y Complement of A325777.

%Y Cf. A002033, A056239, A112798, A143823, A169942, A299702, A301899, A325676, A325768, A325769, A325770, A325779.

%K nonn

%O 1,2

%A _Gus Wiseman_, May 20 2019

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Last modified August 8 17:42 EDT 2024. Contains 375023 sequences. (Running on oeis4.)