A118042 Column 1 of triangle A118040, which is the matrix square of triangle A118032; also equals a bisection of A118034, which is column 1 of A118032.

1, 4, 14, 44, 130, 364, 990, 2540, 6514, 15640, 38434, 87940, 209166, 460224, 1063818, 2266576, 5105788, 10573476, 23296326, 47097284, 101395460, 200414252, 424162586, 823203108, 1705499044, 3248816636, 6647515550, 12492112904

Offset

0,2

Links

Table of n, a(n) for n=0..27.

Crossrefs

Cf. A118034; A118040 (triangle), A118041 (column 0), A118043 (column 2); A118044 (row sums); related triangles: A118032, A118045.

Sequence in context: A057223 A007466 A062109 * A006645 A094309 A000300

Adjacent sequences: A118039 A118040 A118041 * A118043 A118044 A118045

Keyword

nonn

Author

Paul D. Hanna, Apr 10 2006

Status

approved