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

1,2

Comments

See A189677.

Links

Table of n, a(n) for n=1..84.

Mathematica

(See A189677.)

Crossrefs

Cf. A189677, A189678.

Sequence in context: A244223 A284534 A118011 * A286666 A190229 A190085

Adjacent sequences: A189676 A189677 A189678 * A189680 A189681 A189682

Keyword

nonn

Author

Clark Kimberling, Apr 25 2011

Status

approved