A071639 - cp's OEIS frontend

A071639 Numbers k such that core(k) = b(k,1)*b(k,0) where b(k,1) is the number of 1's in binary representation of k, b(k,0) the number of 0's and core(k) the squarefree part of k.

n	a(n)
1	24
2	3500
3	6048
4	52855
5	56320
6	67270
7	71874
8	80920
9	85536
10	95830
11	105600
12	112000
13	117670
14	131625
15	142373
16	155925
17	250173
18	262392
19	280800
20	350142
21	360672
22	673036
23	965419
24	984256
25	1041859
26	1078110
27	1144440
28	1166990
29	1283040
30	1331000
31	1355310
32	1454750
33	1480160
34	1691360

[24, 3500, 6048, 52855, 56320, 67270, 71874, 80920, 85536, 95830, 105600, 112000, 117670, 131625, 142373, 155925, 250173, 262392, 280800, 350142, 360672, 673036, 965419, 984256, 1041859, 1078110, 1144440, 1166990, 1283040, 1331000, 1355310, 1454750, 1480160, 1691360]

cp's OEIS Frontend

A071639 Numbers k such that core(k) = b(k,1)*b(k,0) where b(k,1) is the number of 1's in binary representation of k, b(k,0) the number of 0's and core(k) the squarefree part of k.

Table of values

List of values