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A247916 Numbers k such that A247914(k+1) = A247914(k) + 1. 3
1, 6, 10, 14, 19, 23, 28, 33, 38, 43, 49, 54, 59, 65, 71, 76, 82, 88, 94, 100, 106, 112, 118, 124, 130, 136, 143, 149, 155, 162, 168, 174, 181, 187, 194, 201, 207, 214, 221, 227, 234, 241, 248, 254, 261, 268, 275, 282, 289, 296, 303, 310, 317, 324, 331, 338 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Complement of A247915.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..100

EXAMPLE

A247914(n+1) - A247914(n) = (2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1,...), and a(n) is the position of the n-th 2.

MATHEMATICA

$RecursionLimit = Infinity; $MaxExtraPrecision = Infinity;

z = 500; u[1] = 0; u[2] = 1; u[n_] := u[n] = u[n - 1] + u[n - 2]/(n - 2);

f[n_] := f[n] = Select[Range[z], Abs[(# + 1)/u[# + 1] - E] < n^-n &, 1];

u = Flatten[Table[f[n], {n, 1, z}]]  (* A247914 *)

w = Differences[u]

f1 = Flatten[Position[w, 1]] (* A247915 *)

f2 = Flatten[Position[w, 2]] (* A247916 *)

CROSSREFS

Cf. A247908, A247911, A247914, A247915.

Sequence in context: A315192 A315193 A284675 * A315194 A315195 A315196

Adjacent sequences:  A247913 A247914 A247915 * A247917 A247918 A247919

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Sep 27 2014

STATUS

approved

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Last modified October 18 01:39 EDT 2021. Contains 348065 sequences. (Running on oeis4.)