A127775 Triangle read by rows: row n consists of n-1 zeros followed by 2n-1.

1, 0, 3, 0, 0, 5, 0, 0, 0, 7, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 0, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

Offset

1,3

Comments

a(A000217(n)) = A005408(n-1), T(n,n) = 2*n - 1. - Reinhard Zumkeller, Feb 11 2007

Links

Table of n, a(n) for n=1..101.

Formula

T(n,k) = (2*n - 1) * 0^(n - k), 1<=k<=n. - Reinhard Zumkeller, Feb 11 2007

Example

First few rows of the triangle are:
1;
0, 3;
0, 0, 5;
0, 0, 0, 7;
...

Crossrefs

Cf. A000217, A127648, A127773, A127774, A005408, A014480, A001787.

Sequence in context: A350789 A361357 A305151 * A210953 A254280 A092669

Adjacent sequences: A127772 A127773 A127774 * A127776 A127777 A127778

Keyword

nonn,tabl

Author

Gary W. Adamson, Jan 28 2007

Extensions

More terms from Reinhard Zumkeller, Feb 11 2007

Status

approved