A189677 -id:A189677 - cp's OEIS frontend

A189679 n+[nr/t]+[ns/t]; r=1, s=arctan(1/2), t=arctan(2).

1, 3, 6, 8, 11, 13, 15, 18, 20, 23, 24, 27, 29, 31, 34, 36, 39, 41, 43, 46, 47, 50, 52, 55, 57, 59, 62, 64, 67, 69, 70, 73, 75, 78, 80, 83, 85, 87, 90, 92, 95, 96, 99, 101, 103, 106, 108, 111, 113, 115, 118, 119, 122, 124, 127, 129, 131, 134, 136, 139, 141, 142, 145, 147, 150, 152, 155, 157, 159, 162, 164, 167, 168, 170, 173, 175, 178, 180, 183, 185, 187, 190, 191, 194

Offset: 1

Clark Kimberling, Apr 25 2011

nonn

See A189677.

Cf. A189677, A189678.

(See A189677.)
Table[n+Floor[n/ArcTan[2]]+Floor[(n*ArcTan[1/2])/ArcTan[2]],{n,200}] (* Harvey P. Dale, Apr 07 2025 *)

A189678 n+[nr/s]+[nt/s]; r=1, s=arctan(1/2), t=arctan(2).

Original entry on oeis.org

5, 10, 16, 21, 26, 32, 38, 44, 49, 54, 60, 65, 72, 77, 82, 88, 93, 98, 104, 110, 116, 121, 126, 132, 137, 144, 149, 154, 160, 165, 171, 177, 182, 188, 193, 198, 204, 209, 216, 221, 226, 232, 237, 243, 249, 254, 260, 265, 271, 276, 281, 288, 293, 298, 304, 309, 315, 321, 326, 332, 337, 343, 348, 354, 360, 365, 370, 376, 381, 387, 393, 398, 404, 409, 415, 420, 426, 432, 437, 443, 448, 453

Offset: 1

Clark Kimberling, Apr 25 2011

nonn

See A189677.

Cf. A189677, A189679.

(See A189677.)
Table[n+Floor[n/ArcTan[1/2]]+Floor[(n*ArcTan[2])/ArcTan[1/2]],{n,90}] (* Harvey P. Dale, Mar 08 2020 *)

cp's OEIS Frontend

A189679 n+[nr/t]+[ns/t]; r=1, s=arctan(1/2), t=arctan(2).

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