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A322046 Irregular triangle read by rows: a Pascal "rhombus", third in the sequence after A059317 and A027907. 0

%I

%S 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,

%T 93,78,45,19,5,1,1,6,26,74,158,248,290,248,158,74,26,6,1

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

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

%e Triangle begins:

%e 1,

%e 1,1,1,

%e 1,2,4,2,1,

%e 1,3,8,10,8,3,1,,

%e 1,4,13,24,31,24,13,4,1,,

%e 1,5,19,45,78,93,78,45,19,5,1,,

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

%e ...

%Y Cf. A059317 and A027907.

%K nonn,tabl,more

%O 0,6

%A _N. J. A. Sloane_, Dec 07 2018

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Last modified November 28 19:34 EST 2021. Contains 349415 sequences. (Running on oeis4.)