A340301 a(n) = n * floor(log_2(n)).

0, 2, 3, 8, 10, 12, 14, 24, 27, 30, 33, 36, 39, 42, 45, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 235, 240, 245, 250, 255, 260, 265, 270, 275, 280, 285, 290

Offset: 1

Author

Alois P. Heinz, Jan 03 2021

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000523, A061717, A326299, A336018.

Programs

Maple

a:= n-> n*ilog2(n):
seq(a(n), n=1..60);

Formula

a(n) = n * A000523(n).

a(n) = A326299(n) - A336018(n).