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A034877 Rows of (Pascal's triangle - Losanitsch's triangle) (n >= 0, k >= 0). 5
1, 1, 1, 2, 2, 2, 2, 4, 4, 2, 3, 6, 10, 6, 3, 3, 9, 16, 16, 9, 3, 4, 12, 28, 32, 28, 12, 4, 4, 16, 40, 60, 60, 40, 16, 4, 5, 20, 60, 100, 126, 100, 60, 20, 5, 5, 25, 80, 160, 226, 226, 160, 80, 25, 5, 6, 30, 110, 240, 396, 452, 396, 240, 110, 30, 6, 6, 36, 140, 350, 636, 848 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

Same as A034852, but omitting the border of 0's.

REFERENCES

S. M. Losanitsch, Die Isomerie-Arten bei den Homologen der Paraffin-Reihe, Chem. Ber. 30 (1897), 1917-1926.

LINKS

Reinhard Zumkeller, Rows n=0..25 of triangle, flattened

N. J. A. Sloane, Classic Sequences

Wikipedia, Losanitsch's triangle

EXAMPLE

1; 1,1; 2,2,2; 2,4,4,2; 3,6,10,6,3; 3,9,16,16,9,3; ...

PROG

(Haskell)

a034877 n k = a034877_tabl !! n !! k

a034877_row n = a034877_tabl !! n

a034877_tabl = map (init . tail) $ drop 2 a034852_tabl

-- Reinhard Zumkeller, Dec 16 2013

CROSSREFS

Cf. A007318, A034851, A034852.

Row sums are essentially A032085. Central column is A032095.

Sequence in context: A060369 A179004 A143979 * A224516 A023161 A023155

Adjacent sequences:  A034874 A034875 A034876 * A034878 A034879 A034880

KEYWORD

nonn,tabl,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from James A. Sellers, May 04 2000

STATUS

approved

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Last modified April 18 12:06 EDT 2014. Contains 240707 sequences.