A322046 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A322046

Irregular triangle read by rows: a Pascal "rhombus", third in the sequence after A059317 and A027907.

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; graph; refs; listen; history; text; internal format)

OFFSET

0,6

LINKS

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

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

EXAMPLE

Triangle begins:

1,1,1,

1,2,4,2,1,

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

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