login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A064642 Triangle defined in A064641 read by rows. 6
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 ...

...

LINKS

Peter Kagey, Table of n, a(n) for n = 0..10010 (first 141 rows, flattened)

M. Dziemianczuk, Counting Lattice Paths With Four Types of Steps, Graphs and Combinatorics, September 2013, Volume 30, Issue 6, pp 1427-1452.

EXAMPLE

Triangle begins

  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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 2 10:39 EST 2020. Contains 338876 sequences. (Running on oeis4.)