A183874 a(n) = n + floor(sqrt(3*n/2)). Complement of A183857.

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

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