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A134867 A010766 * A000012. 2
1, 3, 1, 5, 2, 1, 8, 4, 2, 1, 10, 5, 3, 2, 1, 14, 8, 5, 3, 2, 1, 16, 9, 6, 4, 3, 2, 1, 20, 12, 8, 6, 4, 3, 2, 1, 23, 14, 10, 7, 5, 4, 3, 2, 1, 27, 17, 12, 9, 7, 5, 4, 3, 2, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A024916: (1, 4, 8, 15, 21, 33, ...).

Left column = A006218: (1, 3, 5, 8, 10, 14, 16, ...).

LINKS

Table of n, a(n) for n=1..55.

FORMULA

A010766 * A000012 as infinite lower triangular matrices.

Triangle read by rows, partial row sums of A010766 starting fromt the right.

EXAMPLE

First few rows of the triangle:

1;

3, 1;

5, 2, 1;

8, 4, 2, 1;

10, 5, 3, 2, 1;

14, 8, 5, 3, 2, 1;

16, 9, 6, 4, 3, 2, 1;

...

MATHEMATICA

t = Table[Sum[Floor[n/h], {h, k, n}], {n, 0, 10}, {k, 1, n}];

u = Flatten[t] (* A134867 array *)

TableForm[t] (* A134867 sequence *)

(* Clark Kimberling, Oct 11 2014 *)

CROSSREFS

Cf. A010766, A006218, A024916.

Sequence in context: A100898 A101350 A199478 * A102573 A233940 A134033

Adjacent sequences: A134864 A134865 A134866 * A134868 A134869 A134870

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Nov 14 2007

STATUS

approved

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Last modified February 1 15:00 EST 2023. Contains 359993 sequences. (Running on oeis4.)