OFFSET
1,2
COMMENTS
See A005228.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = n^2 + C*n^(3/2) + O(n), where C = 5/6. According to the simplified model: the sum of n consecutive odd numbers without the odd squares. - Thomas Ordowski, Sep 24 2014
MATHEMATICA
a = {1}; d = 3; k = 1; Do[ While[ Position[a, d] != {}, d += 2 ]; k = k + d; d += 2; a = Append[a, k], {n, 49} ]; a (* Robert G. Wilson v, Sep 28 2005 *)
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, Aug 30 2005
EXTENSIONS
Corrected and extended by Robert G. Wilson v, Sep 28 2005
STATUS
approved