A239962 Number of partitions of n such that (number of distinct parts) = multiplicity of the least part.
1, 1, 1, 1, 2, 2, 3, 3, 6, 4, 10, 9, 12, 16, 23, 21, 34, 42, 45, 64, 76, 92, 113, 144, 166, 214, 247, 308, 365, 459, 523, 642, 774, 922, 1094, 1304, 1556, 1830, 2191, 2573, 3039, 3570, 4242, 4911, 5859, 6756, 8000, 9244, 10916, 12581, 14780, 17048, 19894
Offset: 0
Examples
a(8) counts these 6 partitions: 611, 44, 422, 3311, 32111, 2222.
Crossrefs
Cf. A239960.
Programs
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Mathematica
z = 54; d[p_] := d[p] = Length[DeleteDuplicates[p]]; Table[Count[IntegerPartitions[n], p_ /; d[p] == Count[p, Min[p]]], {n, 0, z}]