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A368371
AGM transform of powers of 2.
3
0, 4, 1016, 547856, 813732832, 3903659417664, 67987041960443776, 4575641535535493153024, 1216334976081196096854162944, 1285452910821757852273429343896576, 5415346123378152397099190627515485911040, 91076602434014222291049466570765323207327092736
OFFSET
1,2
COMMENTS
See A368366 for further information.
LINKS
MATHEMATICA
A369394[n_] := (2^(n+1)-2)^n - n^n*2^(n*(n+1)/2);
Array[A369394, 15] (* Paolo Xausa, Jan 29 2024 *)
PROG
(Python)
def A368371(n): return ((1<<n+1)-2)**n-n**n*(1<<(n*(n+1)>>1)) # Chai Wah Wu, Jan 25 2024
CROSSREFS
Cf. A368366.
Sequence in context: A087365 A024059 A069920 * A217024 A013780 A139300
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 24 2024
STATUS
approved