cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A240080 Number of partitions of n such that m(greatest part) >= m(1), where m = multiplicity.

Original entry on oeis.org

1, 1, 2, 3, 4, 5, 8, 9, 14, 17, 24, 29, 42, 49, 68, 83, 110, 133, 176, 211, 274, 331, 420, 507, 640, 767, 956, 1149, 1416, 1695, 2078, 2477, 3014, 3589, 4334, 5147, 6188, 7321, 8756, 10341, 12306, 14491, 17182, 20175, 23828, 27919, 32848, 38393, 45038, 52505
Offset: 0

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Author

Clark Kimberling, Apr 01 2014

Keywords

Examples

			a(7) counts these 9 partitions:  7, 61, 52, 43, 421, 331, 322, 2221, 1111111.
		

Crossrefs

Programs

  • Mathematica
    z = 60; f[n_] := f[n] = IntegerPartitions[n]; t1 = Table[Count[f[n], p_ /; Count[p, Max[p]] < Count[p, 1]], {n, 0, z}]  (* A240076 *)
    t2 = Table[Count[f[n], p_ /; Count[p, Max[p]] <= Count[p, 1]], {n, 0, z}] (* A240077 *)
    t3 = Table[Count[f[n], p_ /; Count[p, Max[p]] == Count[p, 1]], {n, 0, z}] (* A240078 *)
    t4 = Table[Count[f[n], p_ /; Count[p, Max[p]] > Count[p, 1]], {n, 0, z}] (* A117995 *)
    t5 = Table[Count[f[n], p_ /; Count[p, Max[p]] >= Count[p, 1]], {n, 0, z}] (* A240080 *)

Formula

a(n) = A240078(n) + A117995(n) for n >= 0.