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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A322046 Irregular triangle read by rows: a Pascal "rhombus", third in the sequence after A059317 and A027907. 0
1, 1, 1, 1, 1, 2, 4, 2, 1, 1, 3, 8, 10, 8, 3, 1, 1, 4, 13, 24, 31, 24, 13, 4, 1, 1, 5, 19, 45, 78, 93, 78, 45, 19, 5, 1, 1, 6, 26, 74, 158, 248, 290, 248, 158, 74, 26, 6, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,6

REFERENCES

Sheng-Liang Yang et al., The Pascal rhombus and Riordan arrays, Fib. Q., 56:4 (2018), 337-347. See Fig. 4.

LINKS

Table of n, a(n) for n=0..48.

EXAMPLE

Triangle begins:

1,

1,1,1,

1,2,4,2,1,

1,3,8,10,8,3,1,,

1,4,13,24,31,24,13,4,1,,

1,5,19,45,78,93,78,45,19,5,1,,

1,6,26,74,158,248,290,248,158,74,26,6,1,

...

CROSSREFS

Cf. A059317 and A027907.

Sequence in context: A225812 A132823 A059317 * A247644 A220886 A256156

Adjacent sequences:  A322043 A322044 A322045 * A322047 A322048 A322049

KEYWORD

nonn,tabl,more

AUTHOR

N. J. A. Sloane, Dec 07 2018

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 October 22 13:49 EDT 2021. Contains 348170 sequences. (Running on oeis4.)