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.

A227198 Odd terms in A227197.

Original entry on oeis.org

9, 15, 25, 33, 39, 49, 57, 63, 81, 87, 95, 105, 111, 119, 121, 129, 135, 145, 153, 159, 169, 177, 183, 201, 207, 215, 225, 231, 249, 255, 265, 273, 279, 289, 297, 303, 321, 327, 335, 345, 351, 361, 369, 375, 385, 393, 399, 417, 423, 441, 447, 455, 465, 471, 489
Offset: 1

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Author

Antti Karttunen, Jul 06 2013

Keywords

Comments

Gives all terms n for which A090368((n+1)/2) = A112046((n-1)/2).
Contains all odd squares. What else?

Crossrefs

Programs

  • PARI
    A227196(n) = for(k=1, n, if(kronecker(k, n)<1, return(k)))
    for(n=2,1000,if((0==kronecker(A227196(n),n)&&1==(n%2)),print1(n,", ")))