A184104 n+floor(5*sqrt(n)); complement of A184105.

6, 9, 11, 14, 16, 18, 20, 22, 24, 25, 27, 29, 31, 32, 34, 36, 37, 39, 40, 42, 43, 45, 46, 48, 50, 51, 52, 54, 55, 57, 58, 60, 61, 63, 64, 66, 67, 68, 70, 71, 73, 74, 75, 77, 78, 79, 81, 82, 84, 85, 86, 88, 89, 90, 92, 93, 94, 96, 97, 98, 100, 101, 102, 104, 105, 106, 107, 109, 110, 111, 113, 114, 115, 117, 118, 119, 120, 122, 123, 124, 126, 127, 128, 129, 131, 132, 133, 134, 136, 137, 138, 139, 141, 142, 143, 144, 146, 147, 148, 150

Offset

1,1

Links

Table of n, a(n) for n=1..100.

Formula

a(n)=n+floor(5*sqrt(n)).

Mathematica

a=25; b=0;
Table[n+Floor[(a*n+b)^(1/2)], {n, 100}]
Table[n-1+Ceiling[(n*n-b)/a], {n, 70}]

Crossrefs

Cf. A184105.

Sequence in context: A121899 A357324 A276419 * A315950 A026614 A202137

Adjacent sequences: A184101 A184102 A184103 * A184105 A184106 A184107

Keyword

nonn,easy

Author

Clark Kimberling, Jan 09 2011

Status

approved