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A132778 Triangle read by rows, n-1 terms of (2n - 1) followed by n. 1
1, 3, 2, 5, 5, 3, 7, 7, 7, 4, 9, 9, 9, 9, 5, 11, 11, 11, 11, 11, 6, 13, 13, 13, 13, 13, 13, 7, 15, 15, 15, 15, 15, 15, 15, 8, 17, 17, 17, 17, 17, 17, 17, 17, 17, 9, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 10 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A001844: (1, 5, 13, 25, 41, 61,...).

LINKS

Table of n, a(n) for n=1..57.

FORMULA

A007318^(-1) * [A003506 * A000012], as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are;

1;

3, 2;

5, 5, 3;

7, 7, 7, 4;

9, 9, 9, 9, 5;

...

CROSSREFS

Cf. A003506, A001844.

Sequence in context: A124732 A167552 A094787 * A182289 A127738 A001598

Adjacent sequences:  A132775 A132776 A132777 * A132779 A132780 A132781

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Aug 29 2007

STATUS

approved

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Last modified January 22 16:37 EST 2020. Contains 331152 sequences. (Running on oeis4.)