cp's OEIS Frontend

A218530 Partial sums of floor(n/11).

%I A218530 #15 Jul 21 2015 09:50:45
%S A218530 0,0,0,0,0,0,0,0,0,0,0,1,2,3,4,5,6,7,8,9,10,11,13,15,17,19,21,23,25,
%T A218530 27,29,31,33,36,39,42,45,48,51,54,57,60,63,66,70,74,78,82,86,90,94,98,
%U A218530 102,106,110,115,120,125,130,135,140,145,150,155,160,165,171
%N A218530 Partial sums of floor(n/11).
%C A218530 Apart from the initial zeros, the same as A008729.
%F A218530 a(11n)    = A051865(n).
%F A218530 a(11n+1)  = A180223(n).
%F A218530 a(11n+4)  = A022268(n).
%F A218530 a(11n+5)  = A022269(n).
%F A218530 a(11n+6)  = A254963(n)
%F A218530 a(11n+9)  = A211013(n).
%F A218530 a(11n+10) = A152740(n).
%F A218530 G.f.: x^11/((1-x)^2*(1-x^11)).
%e A218530 As square array:
%e A218530 ..0....0....0....0....0....0....0....0....0....0....0
%e A218530 ..1....2....3....4....5....6....7....8....9...10...11
%e A218530 .13...15...17...19...21...23...25...27...29...31...33
%e A218530 .36...39...42...45...48...51...54...57...60...63...66
%e A218530 .70...74...78...82...86...90...94...98..102..106..110
%e A218530 115..120..125..130..135..140..145..150..155..160..165
%e A218530 171..177..183..189..195..201..207..213..219..225..231
%e A218530 238..245..252..259..266..273..280..287..294..301..308
%e A218530 316..324..332..340..348..356..364..372..380..388..396
%e A218530 405..414..423..432..441..450..459..468..477..486..495
%e A218530 505..515..525..535..545..555..565..575..585..595..605
%e A218530 ...
%Y A218530 Cf. similar sequences: A000217, A002820, A130518, A130519, A130520, A174709, A174738, A118729, A218470, A131242.
%K A218530 nonn,tabf,easy
%O A218530 0,13
%A A218530 _Philippe Deléham_, Mar 27 2013