login
Numbers not of the form Sum_{k=1..m} floor(m/k^3).
4

%I #9 May 15 2026 10:15:01

%S 8,17,26,30,36,45,54,61,64,73,74,83,92,94,102,111,120,125,130,139,145,

%T 149,150,158,160,169,178,187,190,197,206,215,221,225,226,235,244,253,

%U 254,255,264,273,282,286,292,295,302,303,312,319,322,331,340,349,351

%N Numbers not of the form Sum_{k=1..m} floor(m/k^3).

%C Complement of A013937.

%H Chai Wah Wu, <a href="/A396046/b396046.txt">Table of n, a(n) for n = 1..10000</a>

%o (Python)

%o # uses Python function from A013937

%o from itertools import count, islice

%o def A396046_gen(): # generator of terms

%o c = 0

%o for i in count(0):

%o if (m:=A013937(i))!=i+c:

%o for j in range(i+c,m):

%o yield j

%o c = m-i

%o A396046_list = list(islice(A396046_gen(),30))

%Y Cf. A013937.

%K nonn

%O 1,1

%A _Chai Wah Wu_, May 14 2026