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A132073 A007318 + A131821 - A103451 as infinite lower triangular matrices. 1
1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 7, 5, 5, 6, 6, 11, 11, 6, 6, 7, 7, 16, 21, 16, 7, 7, 8, 8, 22, 36, 36, 22, 8, 8, 9, 9, 29, 57, 71, 57, 29, 9, 9, 10, 10, 37, 85, 127, 127, 85, 37, 10, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums = A132074: (1, 4, 9, 16, 27, 46, 81, 148, 279,...).

LINKS

Table of n, a(n) for n=0..54.

EXAMPLE

First few rows of the triangle are:

1;

2, 2;

3, 3, 3;

4, 4, 4, 4;

5, 5, 7, 5, 5;

6, 6, 11, 11, 6, 6;

7, 7, 16, 21, 16, 7, 7;

8, 8, 22, 36, 36, 22, 8, 8;

9, 9, 29, 57, 71, 57, 29, 9, 9;

10, 10, 37, 85, 127, 127, 85, 37, 10, 10;

...

CROSSREFS

Cf. A007318, A131821, A103451, A132074.

Sequence in context: A049727 A260690 A060802 * A087817 A091497 A005707

Adjacent sequences:  A132070 A132071 A132072 * A132074 A132075 A132076

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Aug 09 2007

STATUS

approved

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Last modified June 20 19:36 EDT 2019. Contains 324234 sequences. (Running on oeis4.)