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A184115
n + ceiling(n^2/25); complement of A184114.
1
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
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
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jan 09 2011
STATUS
approved