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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 Clark Kimberling, Table of n, a(n) for n = 1..500 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 Cf. A248183, A248185. Sequence in context: A092767 A190000 A080753 * A156745 A087347 A062468 Adjacent sequences:  A248181 A248182 A248183 * A248185 A248186 A248187 KEYWORD nonn,easy AUTHOR Clark Kimberling, Oct 04 2014 STATUS approved

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Last modified May 28 04:51 EDT 2020. Contains 334671 sequences. (Running on oeis4.)