A202698 The first of a set of three triangles constructed by the same rule as A202692-A202694, but where the top entries in the three triangles are 0,1,0 respectively.

0, 0, 0, 3, 3, 3, 0, 3, 6, 9, 147, 147, 144, 138, 129

Offset

1,4

Links

Table of n, a(n) for n=1..15.

M. Josuat-Verges, J.-C. Novelli and J.-Y. Thibon, The algebraic combinatorics of snakes, arXiv preprint arXiv:1110.5272, 2011

Example

The triangle begins:
0
0 0
3 3 3
0 3 6 9
147 147 144 138 129
...
The three triangles together:
0                   1                        0
0 0                 0 1                      1 1
3 3 3               3 3 2                    2 1 0
0 3 6 9             9 12 15 17               17 19 20 20
147 147 144 138 129 129 120 108 93 76        76 59 40 20 0

Crossrefs

The three triangles are A202698, A202699, A202700.

Sequence in context: A130719 A143606 A126660 * A320785 A164884 A357073

Adjacent sequences: A202695 A202696 A202697 * A202699 A202700 A202701

Keyword

nonn,tabl,more

Author

N. J. A. Sloane, Dec 23 2011

Status

approved