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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A183859 n-1+ceiling((n^2)/3); complement of A183858. 1
1, 3, 5, 9, 13, 17, 23, 29, 35, 43, 51, 59, 69, 79, 89, 101, 113, 125, 139, 153, 167, 183, 199, 215, 233, 251, 269, 289, 309, 329, 351, 373, 395, 419, 443, 467, 493, 519, 545, 573, 601, 629, 659, 689, 719, 751, 783, 815, 849, 883, 917, 953, 989, 1025, 1063, 1101 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..56.

Index entries for linear recurrences with constant coefficients, signature (2,-1,1,-2,1).

FORMULA

a(n)=n-1+ceiling((n^2)/3).

MATHEMATICA

a=3; b=0;

Table[n+Floor[(a*n+b)^(1/2)], {n, 100}]

Table[n-1+Ceiling[(n*n-b)/a], {n, 80}]

CROSSREFS

Cf. A183858.

Sequence in context: A123509 A196094 A063915 * A096228 A185170 A211340

Adjacent sequences:  A183856 A183857 A183858 * A183860 A183861 A183862

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jan 07 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 June 26 04:11 EDT 2019. Contains 324369 sequences. (Running on oeis4.)