login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A184479 Upper s-Wythoff sequence, where s(n)=3n+1.  Complement of A184478. 3
5, 9, 13, 17, 22, 26, 30, 35, 39, 43, 48, 52, 56, 61, 65, 69, 73, 78, 82, 86, 91, 95, 99, 104, 108, 112, 116, 121, 125, 129, 134, 138, 142, 147, 151, 155, 159, 164, 168, 172, 177, 181, 185, 190, 194, 198, 202, 207, 211, 215, 220, 224, 228, 233, 237, 241, 246 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

M. F. Hasler, Table of n, a(n) for n = 1..1000, Jan 07 2019

FORMULA

a(n) = A184478(n) + s(n). - M. F. Hasler, Jan 07 2019

For n up to 1000 at least, a(n) = round(m*n + c) with m ~ 4.302774 and c ~ 0.268517. - M. F. Hasler, Jan 07 2019

MATHEMATICA

k=3; r=-1; d=Sqrt[4+k^2];

a[n_]:=Floor[(1/2)(d+2-k)(n+r/(d+2))];

b[n_]:=Floor[(1/2)(d+2+k)(n-r/(d+2))];

Table[a[n], {n, 120}]

Table[b[n], {n, 120}]

PROG

(PARI) A184479_upto(N, s(n)=3*n+1, U=[0], b=[])={until(b[#b]>=N, b=concat(b, s(1+#b)+U[1]+=1); U=setunion(U, [b[#b]]); while(#U>1 && U[2]==U[1]+1, U=U[^1])); b} \\ M. F. Hasler, Jan 07 2019

CROSSREFS

Cf. A184117, A184478.

Sequence in context: A004958 A190887 A314683 * A314684 A247128 A314685

Adjacent sequences:  A184476 A184477 A184478 * A184480 A184481 A184482

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 15 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 23 11:44 EDT 2019. Contains 325254 sequences. (Running on oeis4.)