A161444 Numbers n such that A160700(n) = 4.

4, 21, 38, 55, 64, 81, 98, 115, 140, 157, 174, 191, 200, 217, 234, 251, 261, 276, 295, 310, 321, 336, 355, 370, 397, 412, 431, 446, 457, 472, 491, 506, 518, 535, 548, 565, 578, 595, 608, 625, 654, 671, 684, 701, 714, 731, 744, 761, 775, 790, 805, 820, 835

Offset

1,1

Links

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

Formula

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

Prog

(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)==4, return(k))) \\ Charles R Greathouse IV, Jan 25 2018

Crossrefs

A161440, A161441, A161442, A161443, A161445, A161446, A161447, A161448, A161449, A161450, A161451, A161452, A161453, A161454, A161455.

Sequence in context: A273707 A364679 A204557 * A188219 A280091 A086474

Adjacent sequences: A161441 A161442 A161443 * A161445 A161446 A161447

Keyword

nonn,easy

Author

Reinhard Zumkeller, Jun 10 2009

Status

approved