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A248184 Numbers k such that A248183(k+1) = A248183(k). 3
1, 2, 5, 8, 12, 15, 18, 22, 25, 29, 32, 35, 39, 42, 46, 49, 52, 56, 59, 63, 66, 70, 73, 76, 80, 83, 87, 90, 93, 97, 100, 104, 107, 110, 114, 117, 121, 124, 128, 131, 134, 138, 141, 145, 148, 151, 155, 158, 162, 165, 169, 172, 175, 179, 182, 186, 189, 192 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
The difference sequence of A248183 is (0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1,...), so that A248184 = (1, 2, 5, 8, 12, 15, 18, 22,...) and A248185 = (3, 4, 6, 7, 9, 10, 11, 13, 14, 16, 17,...), the complement of A248185.
LINKS
MATHEMATICA
z = 200; p[k_] := p[k] = Sum[1/(h*(h + 1)*(h + 2)), {h, 1, k}] ;
N[Table[1/4 - p[n], {n, 1, z/10}]]
f[n_] := f[n] = Select[Range[z], 1/4 - p[#] < 1/n^2 &, 1];
u = Flatten[Table[f[n], {n, 1, z}]] (* A248183 *)
Flatten[Position[Differences[u], 0]] (* A248184 *)
Flatten[Position[Differences[u], 1]] (* A248185 *)
CROSSREFS
Sequence in context: A092767 A190000 A080753 * A156745 A087347 A062468
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Oct 04 2014
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)