A324879 Numbers k such that A324863(k) is equal to A324874(k).

1, 9, 15, 16, 21, 27, 35, 39, 55, 57, 64, 75, 77, 85, 87, 90, 91, 95, 99, 105, 111, 115, 119, 125, 129, 133, 143, 147, 155, 159, 161, 175, 183, 185, 189, 195, 201, 203, 205, 209, 213, 221, 235, 237, 243, 245, 253, 256, 259, 265, 267, 275, 285, 287, 295, 299, 301, 303, 319, 321, 323, 325, 335, 339, 341, 351, 355, 363, 365

Offset: 1

Author

Antti Karttunen, Mar 27 2019

Keywords

• nonn

Comments

In range 1..10000, there are only three such numbers k for which A324868(k) == A000120(A324866(k)): 1, 9, 125. See A324201.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..2240 (based on Hans Havermann's factorization of A156552)
• Index entries for sequences related to binary expansion of n
• Index entries for sequences computed from indices in prime factorization
• Index entries for sequences related to sigma(n)

Crossrefs

Cf. A000120, A324863, A324866, A324868, A324874.

Subsequences: A324201, A324880 (even terms).

Programs

PARI

for(n=1,oo,if(A324863(n)==A324874(n), print1(n,", ")));