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A240858
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Number of partitions p of n into distinct parts not including max(p) - min(p).
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2
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0, 1, 1, 1, 2, 3, 2, 5, 5, 6, 7, 12, 11, 16, 16, 23, 27, 33, 35, 47, 52, 65, 75, 88, 101, 121, 139, 164, 190, 219, 249, 294, 334, 384, 443, 504, 577, 659, 746, 851, 971, 1097, 1242, 1409, 1585, 1790, 2023, 2271, 2557, 2873, 3221, 3612, 4049, 4521, 5054, 5651
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OFFSET
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0,5
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LINKS
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FORMULA
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EXAMPLE
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a(10) counts all 10 partitions of 10 into distinct parts except for 541, 532, 4321, so that a(10) = 7.
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MATHEMATICA
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z = 40; f[n_] := f[n] = Select[IntegerPartitions[n], Max[Length /@ Split@#] == 1 &]; Table[Count[f[n], p_ /; MemberQ[p, Max[p] - Min[p]]], {n, 0, z}] (* A240852 *)
Table[Count[f[n], p_ /; !MemberQ[p, Max[p] - Min[p]]], {n, 0, z}] (* A240858 *)
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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