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A213220 Positions in A114183 where doubling runs begin. 5
1, 7, 9, 15, 23, 26, 31, 34, 41, 47, 52, 57, 63, 68, 76, 82, 88, 95, 100, 106, 110, 118, 124, 133, 139, 145, 152, 159, 167, 174, 184, 191, 197, 204, 209, 218, 224, 236, 243, 252, 261, 270, 276, 284, 291, 299, 307, 319, 326, 334, 340, 348, 355, 363, 370, 377, 384, 391, 397, 405, 415, 423, 431, 440, 447, 454, 462, 472 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 1..7328

CROSSREFS

Cf. A114183, A221715, A221716 (first differences).

Sequence in context: A024902 A111312 A158891 * A087680 A249333 A020691

Adjacent sequences:  A213217 A213218 A213219 * A213221 A213222 A213223

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Mar 02 2013

STATUS

approved

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Last modified June 19 15:52 EDT 2021. Contains 345143 sequences. (Running on oeis4.)