A218530 Partial sums of floor(n/11).

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, 27, 29, 31, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 70, 74, 78, 82, 86, 90, 94, 98, 102, 106, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 171

Offset: 0

Author

Philippe Deléham, Mar 27 2013

Keywords

• nonn
• tabf
• easy

Comments

Apart from the initial zeros, the same as A008729.

Examples

			As square array:
..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...27...29...31...33
.36...39...42...45...48...51...54...57...60...63...66
.70...74...78...82...86...90...94...98..102..106..110
115..120..125..130..135..140..145..150..155..160..165
171..177..183..189..195..201..207..213..219..225..231
238..245..252..259..266..273..280..287..294..301..308
316..324..332..340..348..356..364..372..380..388..396
405..414..423..432..441..450..459..468..477..486..495
505..515..525..535..545..555..565..575..585..595..605
...
		

Crossrefs

Cf. similar sequences: A000217, A002820, A130518, A130519, A130520, A174709, A174738, A118729, A218470, A131242.

Formula

a(11n) = A051865(n).

a(11n+1) = A180223(n).

a(11n+4) = A022268(n).

a(11n+5) = A022269(n).

a(11n+6) = A254963(n)

a(11n+9) = A211013(n).

a(11n+10) = A152740(n).

G.f.: x^11/((1-x)^2*(1-x^11)).