A190521 - OEIS

A190521

a(n) = n + [nr/t] + [ns/t] + [nu/t] + [nv/t] + [nw/t], where r=sin(x), s=cos(x), t=tan(x), u=csc(x), v=sec(x), w=cot(x), x=2*Pi/5.

2, 4, 7, 10, 12, 15, 18, 20, 23, 28, 30, 33, 36, 38, 41, 43, 46, 49, 52, 57, 60, 62, 65, 68, 70, 73, 76, 78, 81, 86, 88, 90, 94, 96, 98, 102, 104, 107, 112, 115, 118, 120, 123, 126, 128, 131, 134, 137, 140, 144, 146, 149, 152, 154, 156, 160, 163, 165, 170, 173, 175, 179, 181, 183, 187, 189, 192, 196, 198, 201, 204, 207, 209, 212, 215