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A085852 Triangle T(n, k) read by rows; given by [0, 1, 0, 2, 0, 3, 0, 4, ...] DELTA [1, 0, 2, 0, 2, 0, 3, 0, 2, 0, 4, 0, 2, 0, ...] (A000005 interspersed with 0's) where DELTA is Deléham's operator defined in A084938. 1
1, 0, 1, 0, 1, 1, 0, 1, 4, 1, 0, 1, 11, 11, 1, 0, 1, 26, 62, 26, 1, 0, 1, 57, 266, 258, 57, 1, 0, 1, 120, 991, 1792, 903, 120, 1, 0, 1, 247, 3405, 10363, 9483, 2829, 247, 1, 0, 1, 502, 11140, 53818, 80342, 42906, 8212, 502, 1, 0, 1, 1013, 35348, 260996 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,9

LINKS

Alois P. Heinz, Rows n = 0..140, flattened

EXAMPLE

Triangle begins:

1,

0, 1,

0, 1, 1,

0, 1, 4, 1,

0, 1, 11, 11, 1,

0, 1, 26, 62, 26, 1,

0, 1, 57, 266, 258, 57, 1,

0, 1, 120, 991, 1792, 903, 120, 1,

0, 1, 247, 3405, 10363, 9483, 2829, 247, 1,

0, 1, 502, 11140, 53818, 80342, 42906, 8212, 502, 1,

...

CROSSREFS

Cf. A000295 (3rd column), A000460 (4th column), A000498 (5th column).

Sequence in context: A294118 A318996 A294490 * A123125 A173018 A055105

Adjacent sequences:  A085849 A085850 A085851 * A085853 A085854 A085855

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Aug 16 2003

EXTENSIONS

Incorrect comment removed by Philippe Deléham, Sep 25 2015

STATUS

approved

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Last modified August 23 22:45 EDT 2019. Contains 326254 sequences. (Running on oeis4.)