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A183874 a(n) = n + floor(sqrt(3*n/2)). Complement of A183857. 2
2, 3, 5, 6, 7, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 108, 109, 110, 111, 112 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

MAPLE

seq(n+floor(sqrt(3*n/2)), n=1..100); # Robert Israel, Nov 01 2016

MATHEMATICA

a=3/2; b=0;

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

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

PROG

(MAGMA) [n+Floor(Sqrt(3*n/2)): n in [1..120]]; // Vincenzo Librandi, Nov 02 2016

CROSSREFS

Cf. A183857.

Sequence in context: A039192 A188087 A329133 * A175140 A039144 A183864

Adjacent sequences:  A183871 A183872 A183873 * A183875 A183876 A183877

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jan 07 2011

STATUS

approved

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Last modified September 22 19:36 EDT 2021. Contains 347608 sequences. (Running on oeis4.)