

A067396


a(n) is the position of the nth occurrence of the pair "2,2" in A067395 (the first difference sequence of A067368).


3



4, 13, 22, 31, 36, 41, 50, 59, 68, 77, 86, 95, 104, 109, 114, 123, 132, 141, 150, 159, 168, 177, 182, 187, 196, 205, 214, 223, 232, 241, 250, 255, 260, 269, 278, 287, 292, 297, 306, 315, 324, 329, 334, 343, 352, 361, 370, 379, 388, 397, 402, 407, 416, 425
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OFFSET

1,1


COMMENTS

A comparison of this sequence with A067368 suggests the following conjecture: a(n)=2*A067368(n)+n1. This has been confirmed for several hundred terms.
Above conjecture is true, and it is same as conjecture in Formula section of A067368.  Altug Alkan, Sep 26 2018


LINKS

Altug Alkan, Table of n, a(n) for n = 1..1000


EXAMPLE

A067395 begins {4,4,4,2,2,4,4,4,4,...}, so a(1)=4.


CROSSREFS

Cf. A067368, A067395, A213258.
Sequence in context: A153193 A304905 A043469 * A017209 A052218 A183148
Adjacent sequences: A067393 A067394 A067395 * A067397 A067398 A067399


KEYWORD

nonn


AUTHOR

John W. Layman, Jan 22 2002


STATUS

approved



