login
This site is supported by donations to The OEIS Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A218784 Positions where the parity of A179016 changes, i.e., where the runs of A213729 begin. 4
0, 1, 3, 4, 5, 6, 8, 9, 11, 12, 13, 14, 16, 18, 22, 23, 25, 27, 30, 31, 33, 34, 35, 38, 39, 40, 42, 44, 47, 48, 50, 51, 52, 56, 58, 59, 65, 67, 69, 70, 72, 74, 77, 78, 80, 81, 82, 86, 88, 89, 95, 97, 98, 99, 101, 102, 108, 111, 114, 119, 121, 122, 123, 124, 126, 128 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..8649

FORMULA

a(0)=0 and in the later terms i occurs whenever A213729(i) differs from A213729(i-1).

PROG

(Scheme with Antti Karttunen's intseq-library): (define A218784 (MATCHING-POS 0 0 (lambda (i) (or (< i 1) (not (= (A213729 i) (A213729 (-1+ i))))))))

CROSSREFS

Cf. A213728, A213729, A218545, A218546, A218547. A218544(n)=a(n)+1.

Sequence in context: A290136 A219636 A047428 * A039066 A304800 A197911

Adjacent sequences:  A218781 A218782 A218783 * A218785 A218786 A218787

KEYWORD

nonn

AUTHOR

Antti Karttunen, Nov 10 2012

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 15 18:47 EST 2019. Contains 319168 sequences. (Running on oeis4.)