login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A240200 Number of partitions p of n such that mean(p) < multiplicity(max(p)). 5

%I #5 Apr 12 2014 16:22:32

%S 0,0,1,1,1,2,3,3,4,5,7,9,11,14,17,21,24,33,37,47,56,67,79,100,109,137,

%T 161,189,217,272,297,365,416,485,560,685,726,891,1029,1176,1314,1600,

%U 1728,2085,2336,2637,3020,3621,3802,4554,5171,5820,6461,7691,8266

%N Number of partitions p of n such that mean(p) < multiplicity(max(p)).

%F a(n) = A240201(n) - A116900(n) for n >= 0.

%F a(n) + A116900(n) + A240202(n) = A000041(n) for n >= 1.

%e a(6) counts these 3 partitions: 222, 2211, 111111.

%t z = 60; f[n_] := f[n] = IntegerPartitions[n];

%t t1 = Table[Count[f[n], p_ /; Mean[p] < Count[p, Max[p]]], {n, 0, z}] (* A240200 *)

%t t2 = Table[Count[f[n], p_ /; Mean[p] <= Count[p, Max[p]]], {n, 0, z}] (* A240201 *)

%t t3 = Table[Count[f[n], p_ /; Mean[p] == Count[p, Max[p]]], {n, 0, z}] (* A116900 *)

%t t4 = Table[Count[f[n], p_ /; Mean[p] > Count[p, Max[p]]], {n, 0, z}] (* A240202 *)

%t t5 = Table[Count[f[n], p_ /; Mean[p] >= Count[p, Max[p]]], {n, 0, z}] (* A116901 *)

%Y Cf. A240201, A240202, A116900, A116901, A000041.

%K nonn,easy

%O 0,6

%A _Clark Kimberling_, Apr 03 2014

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 11:36 EDT 2024. Contains 371968 sequences. (Running on oeis4.)