A184115 n + ceiling(n^2/25); complement of A184114.

2, 3, 4, 5, 6, 8, 9, 11, 13, 14, 16, 18, 20, 22, 24, 27, 29, 31, 34, 36, 39, 42, 45, 48, 50, 54, 57, 60, 63, 66, 70, 73, 77, 81, 84, 88, 92, 96, 100, 104, 109, 113, 117, 122, 126, 131, 136, 141, 146, 150, 156, 161, 166, 171, 176, 182, 187, 193, 199, 204, 210, 216, 222, 228, 234, 241, 247, 253, 260, 266, 273, 280, 287, 294, 300, 308, 315, 322, 329, 336, 344, 351, 359, 367, 374, 382, 390, 398, 406, 414

Offset

1,1

Links

Table of n, a(n) for n=1..90.

Formula

a(n) = n + ceiling(n^2/25).

Mathematica

a=25; b=-25;
Table[n+Floor[(a*n+b)^(1/2)], {n, 100}]
Table[n-1+Ceiling[(n^2-b)/a], {n, 90}]

Crossrefs

Cf. A184114.

Sequence in context: A049808 A344933 A191886 * A050418 A011869 A177738

Adjacent sequences: A184112 A184113 A184114 * A184116 A184117 A184118

Keyword

nonn,easy

Author

Clark Kimberling, Jan 09 2011

Status

approved