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A183569
n+floor(sqrt(4n-3)), complement of A024206.
0
2, 4, 6, 7, 9, 10, 12, 13, 14, 16, 17, 18, 20, 21, 22, 23, 25, 26, 27, 28, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 42, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 64, 65, 66, 67, 68, 69, 70, 72, 73, 74, 75, 76, 77, 78, 79, 81, 82, 83, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 97, 98, 100, 101, 102, 103, 104, 105, 106, 107, 108, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 132, 133, 134
OFFSET
1,1
MATHEMATICA
Table[n+Floor[Sqrt[4n-3]], {n, 150}] (* Harvey P. Dale, Jan 27 2023 *)
CROSSREFS
Cf. A024206.
Sequence in context: A111094 A064427 A289243 * A248612 A247000 A213356
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jan 05 2011
STATUS
approved