A190087 - OEIS

A190087

a(n) = n + [n*r/t] + [n*s/t]; r=1, s=sin(1/2), t=cos(1/2).

2, 5, 7, 10, 12, 15, 17, 21, 23, 26, 29, 31, 34, 36, 40, 42, 45, 47, 50, 52, 55, 59, 61, 64, 66, 69, 71, 74, 77, 80, 82, 85, 88, 90, 93, 96, 99, 101, 104, 106, 109, 111, 114, 118, 120, 123, 125, 128, 130, 133, 136, 139, 141, 144, 147, 149, 152, 155, 158, 160, 163, 165, 168, 170, 174, 177, 179, 182, 184, 187, 189, 193, 195, 198, 200

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

See A190085.

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000

FORMULA

A190085: f(n) = n + [n*sin(1/2)] + [n*cos(1/2)].

A190086: g(n) = n + [n*csc(1/2)] + [n*cot(1/2)].

A190087: h(n) = n + [n*sec(1/2)] + [n*tan(1/2)], this sequence.

MATHEMATICA