A233442 a(n) = 2^n mod n^3.

0, 4, 8, 16, 32, 64, 128, 256, 512, 24, 717, 640, 1601, 2664, 2393, 0, 3334, 5536, 3004, 576, 4166, 9640, 5545, 8704, 7557, 3696, 19034, 6400, 20244, 5824, 29204, 0, 21293, 12176, 13493, 40960, 41146, 25008, 16154, 11776, 55680, 56008, 20642, 79040, 14957, 1016

Offset: 1

Author

Alex Ratushnyak, Dec 09 2013

Keywords

• nonn

Links

• Paolo Xausa, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000079, A000578, A066606, A066607.

Cf. A233441, A233471.

Programs

Mathematica

Array[PowerMod[2, #, #^3] &, 50] (* Paolo Xausa, Mar 27 2025 *)

Python

for n in range(1,100):  print(2**n % n**3, end=', ')

Formula

a(n) = A000079(n) mod A000578(n).