0,2
Triangle A160019 begins : 1 ; 1,3 ; 1,0,3 ; 1,3,5,7 ; 1,0,2,4,3 ; 1,3,0,2,5,7 ; ...
Cf. A007318, A047999, A160019
Sequence in context: A127473 A079611 A174595 * A075882 A125757 A196065
Adjacent sequences: A160017 A160018 A160019 * A160021 A160022 A160023
easy,nonn
Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Apr 29 2009