A161453 Numbers n such that A160700(n) = 13.

13, 28, 47, 62, 73, 88, 107, 122, 133, 148, 167, 182, 193, 208, 227, 242, 268, 285, 302, 319, 328, 345, 362, 379, 388, 405, 422, 439, 448, 465, 482, 499, 527, 542, 557, 572, 587, 602, 617, 632, 647, 662, 677, 692, 707, 722, 737, 752, 782, 799, 812, 829, 842

Offset: 1

Author

Reinhard Zumkeller, Jun 10 2009

Keywords

• nonn
• easy

Links

• Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A161440, A161441, A161442, A161443, A161444, A161445, A161446, A161447, A161448, A161449, A161450, A161451, A161452, A161454, A161455.

Programs

PARI

A160700(n)=my(t=n%16); while(n>15, n>>=4; t=bitxor(t, n%16)); t
a(n)=for(k=16*n-16, 16*n-1, if(a(k)==13, return(k))) \\ Charles R Greathouse IV, Jan 25 2018

Formula

16n - 16 <= a(n) <= 16n - 1. - Charles R Greathouse IV, Jan 25 2018