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A320006 a(n) = 1 if n encodes a nonnegative combinatorial game (in a style of A106486), otherwise 0; Characteristic function of A126001. 4
1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0

LINKS

Antti Karttunen, Table of n, a(n) for n = 0..65537

Index entries for characteristic functions

PROG

(PARI)

A320006(n) = if(!n, 1, my(m=(n>>1), r=0); while(m>0, if((m%2)&&!A320007(r), return(0)); m >>= 2; r++); (1));

A320007(n) = if(!n, 0, my(m=n, s=0); while(m>0, if((m%2)&&A320006(s), return(1)); m >>= 2; s++); (0));

CROSSREFS

Characteristic function of A126001. The topmost row of A125999.

Cf. A320007.

Sequence in context: A285345 A125999 A073784 * A219977 A128130 A133872

Adjacent sequences:  A320003 A320004 A320005 * A320007 A320008 A320009

KEYWORD

nonn

AUTHOR

Antti Karttunen, Oct 18 2018

STATUS

approved

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Last modified November 14 07:19 EST 2019. Contains 329111 sequences. (Running on oeis4.)