A153288 A triangular sequence designed with row sums 2*3^n with first column A064263.

2, 3, 3, 2, 14, 2, 2, 25, 25, 2, 2, 36, 86, 36, 2, 2, 47, 194, 194, 47, 2, 2, 58, 302, 734, 302, 58, 2, 2, 69, 410, 1706, 1706, 410, 69, 2, 2, 80, 518, 3390, 5142, 3390, 518, 80, 2

Offset

0,1

Comments

Row sums are:

{2, 6, 18, 54, 162, 486., 1458, 4374., 13122,...}.

Sequence was calculated to the 3^n level by hand.

Links

Table of n, a(n) for n=0..44.

Example

{2},
{3, 3},
{2, 14, 2},
{2, 25, 25, 2},
{2, 36, 86, 36, 2},
{2, 47, 194, 194, 47, 2},
{2, 58, 302, 734, 302, 58, 2},
{2, 69, 410, 1706, 1706, 410, 69, 2},
{2, 80, 518, 3390, 5142, 3390, 518, 80, 2}

Mathematica

(* first column : A064263*)
b = {{2}, {3, 3}, {2, 14, 2}, {2, 25, 25, 2}, {2, 36, 86, 36, 2},
{2, 47, 194, 194, 47, 2}, {2, 58, 302, 734, 302, 58, 2},
{2, 69, 410, 1706, 1706, 410, 69, 2}, {2, 80, 518, 3390, 5142, 3390, 518, 80, 2}}
Flatten[b]

Crossrefs

A064263

Sequence in context: A153311 A153312 A153283 * A153479 A153489 A153310

Adjacent sequences: A153285 A153286 A153287 * A153289 A153290 A153291

Keyword

nonn,tabl

Author

Roger L. Bagula, Dec 23 2008

Status

approved