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A329493
(Sum of digits of (2^n - 11)) - n.
3
1, -2, 2, 2, 3, -3, -5, 1, 5, 5, 6, 9, 7, -5, -1, 8, 9, 3, 10, 25, 11, 2, 12, 6, 13, 10, 5, 14, 24, 27, 25, 22, 26, 17, 27, 30, 19, 7, 11, 20, 12, 15, 22, 19, 23, 14, 24, 27, 25, 22, 26, 35, 27, 21, 10, 16, 20, 11, 30, 33, 22, 19, 41, 41, 33, 18, -2, 13, 35, 35, 54, 48, 28, 25, 20, 29, 30
OFFSET
4,2
COMMENTS
Is this ever zero? If not, this would prove that A329492(11) = -1, and that A328882 is never -11. (-11 is the first negative open case.)
LINKS
MAPLE
f:= proc(n) convert(convert(2^n-11, base, 10), `+`)-n end proc:
map(f, [$4..100]); # Robert Israel, Nov 17 2019
MATHEMATICA
Table[Total[IntegerDigits[2^n-11]]-n, {n, 4, 90}] (* Harvey P. Dale, Oct 13 2024 *)
CROSSREFS
KEYWORD
sign,base
AUTHOR
N. J. A. Sloane, Nov 16 2019
STATUS
approved