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A064642 Triangle defined in A064641 read by rows. 4
1, 1, 2, 1, 5, 7, 1, 8, 22, 29, 1, 11, 46, 104, 133, 1, 14, 79, 251, 517, 650, 1, 17, 121, 497, 1369, 2669, 3319, 1, 20, 172, 869, 2986, 7541, 14179, 17498, 1, 23, 232, 1394, 5746, 17642, 42031, 77027, 94525, 1, 26, 301, 2099, 10108, 36482, 103696, 236933 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Or, Dziemianczuk's array P(i,j) read by antidiagonals:

1,2,7,29,133,650,3319,17498,...

1,5,22,104,517,2669,14179,77027,...

1,8,46,251,1369,7541,42031,236933,...

1,11,79,497,2986,17642,103696,609428,...

1,14,121,869,5746,36482,226768,1393637,...

...

REFERENCES

M. Dziemianczuk, Counting Lattice Paths With Four Types of Steps, Graphs and Combinatorics, September 2013, DOI 10.1007/s00373-013-1357-1.

LINKS

Table of n, a(n) for n=0..52.

EXAMPLE

1; 1,2; 1,5,7; 1,8,22,29; ...

CROSSREFS

Cf. A064641, A232972.

Sequence in context: A217105 A143892 A129321 * A193630 A144505 A059039

Adjacent sequences:  A064639 A064640 A064641 * A064643 A064644 A064645

KEYWORD

nonn,tabl

AUTHOR

Floor van Lamoen, Oct 03 2001

STATUS

approved

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Last modified February 24 03:21 EST 2018. Contains 299595 sequences. (Running on oeis4.)