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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A182834 Complement of A007590, except for initial zeros. 4
1, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 85, 86, 87, 88, 89, 90, 91, 92 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A245575(a(n)) mod 2 = 0, or, where even terms occur in A245575; a(A078633(n)) mod 2 = 0. - Reinhard Zumkeller, Aug 05 2014

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = n + floor(sqrt(2n-2)).

MATHEMATICA

  a=2; b=-2;

  Table[n+Floor[(a*n+b)^(1/2)], {n, 80}]

  Table[n-1+Ceiling[(n*n-b)/a], {n, 50}]

PROG

(Haskell)

a182834 n = a000196 (2 * n - 2) + n  -- Reinhard Zumkeller, Aug 05 2014

CROSSREFS

Cf. A007590.

Cf. A000196, A078633, A245575.

Sequence in context: A191916 A254614 A320698 * A116883 A256543 A186145

Adjacent sequences:  A182831 A182832 A182833 * A182835 A182836 A182837

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 August 22 07:17 EDT 2019. Contains 326172 sequences. (Running on oeis4.)