OFFSET
1,1
LINKS
Clark Kimberling, Table of n, a(n) for n = 1..1000
EXAMPLE
MATHEMATICA
z = 300; p[k_] := p[k] = Sum[(h^3/3^h), {h, 1, k}];
d = N[Table[33/8 - p[k], {k, 1, z/5}], 12]
f[n_] := f[n] = Select[Range[z], 33/8 - p[#] < 1/4^n &, 1];
u = Flatten[Table[f[n], {n, 1, z}]] (* A248636 *)
d = Differences[u]
v = Flatten[Position[d, 1]] (* A248637 *)
w = Flatten[Position[d, 2]] (* A248638 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Oct 11 2014
STATUS
approved