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A052175 Triangle of numbers arising in enumeration of walks on square lattice. 1
1, 2, 2, 4, 10, 8, 10, 34, 16, 70, 98, 32, 70, 308, 258, 64, 588, 1092, 642, 128, 588, 3024, 3414, 1538, 256, 5544, 12276, 9834, 3586, 512, 5544, 31680, 43230, 26752, 8194, 1024, 56628, 141570, 138424, 69784, 18434, 2048 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..41.

R. K. Guy, Catwalks, sandsteps and Pascal pyramids, J. Integer Sequences, Vol. 3 (2000), Article #00.1.6.

EXAMPLE

1; 2; 2,4; 10,8; 10,34,16; 70,98,32; 70,308,258,64; ...

CROSSREFS

Essentially same as A052176.

Sequence in context: A162508 A199400 A056919 * A102623 A216695 A320069

Adjacent sequences:  A052172 A052173 A052174 * A052176 A052177 A052178

KEYWORD

nonn,tabf,easy,nice

AUTHOR

N. J. A. Sloane, Jan 26 2000

STATUS

approved

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Last modified April 5 00:43 EDT 2020. Contains 333238 sequences. (Running on oeis4.)