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A128021
a(n) = A128020(n)/n.
1
1, 1, 2, 3, 5, 8, 14, 25, 44, 79, 144, 264, 487, 905, 1689, 3167, 5962, 11261, 21337, 40540, 77219, 147418, 282017, 540533, 1037823, 1995814, 3843790, 7413023, 14314803, 27675286, 53565070, 103782323, 201274808, 390709922, 759093562
OFFSET
1,3
FORMULA
a(n) = 1 + floor(sum{k=1 to n-1} A128020(k) /n).
MATHEMATICA
f[l_List] := Block[{n = Length[l] + 1}, Append[l, (1 + Floor[Sum[k*l[[k]], {k, n - 1}]/n])]]; Nest[f, {}, 37] (* Ray Chandler, Feb 12 2007 *)
CROSSREFS
Cf. A128020.
Sequence in context: A091956 A107480 A345235 * A036241 A192633 A125028
KEYWORD
easy,nonn
AUTHOR
Leroy Quet, Feb 11 2007
EXTENSIONS
Extended by Ray Chandler, Feb 12 2007
STATUS
approved