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A078161
a(n) = A051201(2^n).
4
1, 3, 7, 15, 39, 87, 200, 438, 981, 2135, 4639, 9971, 21424, 45699, 97096, 205563, 433895, 913244, 1917491, 4016704, 8397235, 8397235, 36497171, 75900377, 157619705, 326868209, 676998896, 1400510860, 2894068715, 5974185368, 12320552102, 25385332979
OFFSET
0,2
MATHEMATICA
Table[ Apply[ Plus, Union[ Table[ Floor[2^w/j], {j, 1, 2^w}]]], {w, 1, 25}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Nov 27 2002
EXTENSIONS
Extended by Robert G. Wilson v, Dec 02 2002
Terms a(26) onward from Max Alekseyev, Feb 12 2012
a(0)=1 prepended by Alois P. Heinz, Oct 31 2023
STATUS
approved