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A020933 Expansion of (1-4*x)^(21/2). 1
1, -42, 798, -9044, 67830, -352716, 1293292, -3325608, 5819814, -6466460, 3879876, -705432, -117572, -54264, -38760, -36176, -40698, -52668, -76076, -120120, -204204, -369512, -705432, -1410864, -2939300, -6348888, -14162904 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..26.

CROSSREFS

Sequence in context: A030197 A225980 A231164 * A241923 A231162 A290364

Adjacent sequences:  A020930 A020931 A020932 * A020934 A020935 A020936

KEYWORD

sign

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 20 08:44 EST 2019. Contains 320325 sequences. (Running on oeis4.)