A205945 Triangle read by rows related to A001700.

1, 1, 2, 1, 7, 2, 1, 20, 12, 2, 1, 54, 53, 16, 2, 1, 143, 208, 88, 20, 2, 1, 376, 768, 415, 130, 24, 2, 1, 986, 2734, 1804, 700, 180, 28, 2

Offset: 1

Author

Gary W. Adamson, Feb 01 2012

Keywords

• nonn
• tabl

Comments

Row sums = A001700: (1, 3, 10, 35, 126, 462, ...).

Examples

			First few rows of the triangle =
1;
1, 2;
1, 7, 2;
1, 20, 12, 2;
1, 54, 53, 16, 2;
1, 143, 208, 88, 20, 2;
1, 376, 768, 415, 130, 24, 2;
1, 986, 2734, 1804, 700, 180, 28, 2;
...
Row 3 = (1, 7, 2) = row 5 of triangle A191314; and finite differences of column 5 of triangle A205573: (1, 8, 10, ...).
		

Crossrefs

Cf. A001700, A191314, A205573.

Formula

Bisection of triangle A191314 extracting odd numbered rows. Accessing odd numbered columns of A205573, take finite differences of terms from the top -> down.