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.

Showing 1-2 of 2 results.

A186152 Rank of (1/8)n^3 when {(1/8)i^3: i>=1} and {j^2>: j>=1} are jointly ranked with (1/8)i^3 before j^2 when (1/8)i^3=j^2. Complement of A186153.

Original entry on oeis.org

1, 2, 4, 6, 8, 11, 13, 15, 18, 21, 23, 26, 29, 32, 35, 38, 41, 44, 48, 51, 55, 58, 61, 65, 69, 72, 76, 80, 84, 88, 92, 95, 100, 104, 108, 112, 116, 120, 125, 129, 133, 138, 142, 147, 151, 156, 160, 165, 170, 174, 179, 184, 189, 194, 199, 204, 209, 214, 219, 224, 229, 234, 239, 245, 250, 255, 260, 266, 271, 277, 282, 287, 293, 299, 304, 310, 315, 321, 327, 332, 338, 344, 350, 356, 362, 367, 373, 379, 385, 391, 397, 403, 410, 416, 422, 428, 434, 440, 447, 453
Offset: 1

Views

Author

Clark Kimberling, Feb 13 2011

Keywords

Comments

See A186145 for a discussion of adjusted joint rank sequences.

Crossrefs

Programs

  • Mathematica
    d=1/16;u=1/8;v=1;p=3;q=2;
    h[n_]:=((u*n^p-d)/v)^(1/q);
    a[n_]:=n+Floor[h[n]]; (* rank of u*n^p *)
    k[n_]:=((v*n^q+d)/u)^(1/p);
    b[n_]:=n+Floor[k[n]]; (* rank of v*n^q *)
    Table[a[n],{n,1,100}] (* A186152 *)
    Table[b[n],{n,1,100}]  (* A186153 *)

Formula

a(n)=n+floor(((1/8)n^3-1/16)^(1/2)), A186152.
b(n)=n+floor(((n^2)/16+1/2)^(1/3)), A186153.

A186155 Rank of n^2 when {(1/8)i^3: i>=1} and {j^2>: j>=1} are jointly ranked with (1/8)i^3 after j^2 when (1/8)i^3=j^2. Complement of A186154.

Original entry on oeis.org

2, 5, 7, 9, 10, 12, 14, 15, 17, 19, 20, 22, 24, 25, 27, 28, 30, 31, 33, 34, 36, 37, 39, 40, 42, 43, 44, 46, 47, 49, 50, 52, 53, 54, 56, 57, 59, 60, 62, 63, 64, 66, 67, 68, 70, 71, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89, 90, 91, 93, 94, 95, 97, 98, 99, 101, 102, 103, 105, 106, 107, 109, 110, 111, 113, 114, 115, 117, 118, 119, 121, 122, 123, 124, 126, 127, 128, 130
Offset: 1

Views

Author

Clark Kimberling, Feb 13 2011

Keywords

Comments

See A186154.

Crossrefs

Programs

Showing 1-2 of 2 results.