A368371 AGM transform of powers of 2.

0, 4, 1016, 547856, 813732832, 3903659417664, 67987041960443776, 4575641535535493153024, 1216334976081196096854162944, 1285452910821757852273429343896576, 5415346123378152397099190627515485911040, 91076602434014222291049466570765323207327092736

Offset: 1

Author

N. J. A. Sloane, Jan 24 2024

Keywords

• nonn

Comments

See A368366 for further information.

Links

• Paolo Xausa, Table of n, a(n) for n = 1..55

Crossrefs

Cf. A368366.

Programs

Mathematica

A369394[n_] := (2^(n+1)-2)^n - n^n*2^(n*(n+1)/2);
Array[A369394, 15] (* Paolo Xausa, Jan 29 2024 *)

Python

def A368371(n): return ((1<>1)) # Chai Wah Wu, Jan 25 2024