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A102418 Table of coefficients of Product{k=1..n, (1+x^A000120(k))}. 0
1, 1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 1, 3, 4, 4, 3, 1, 1, 3, 5, 7, 7, 5, 3, 1, 1, 3, 6, 10, 12, 12, 10, 6, 3, 1, 1, 3, 6, 11, 15, 18, 20, 18, 15, 11, 6, 3, 1, 1, 4, 9, 17, 26, 33, 38, 38, 33, 26, 17, 9, 4, 1, 1, 4, 10, 21, 35, 50, 64, 71, 71, 64, 50, 35, 21, 10, 4, 1, 1, 4, 11, 25, 45, 71, 99, 121, 135, 135, 121, 99, 71, 45, 25, 11, 4, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

COMMENTS

Also table of coefficients of Product{k=0..n, (1+x^A000120(k))}/2. Row sums are 2^n. Row n has 1+A000788(n) elements.

LINKS

Table of n, a(n) for n=0..95.

EXAMPLE

Rows begin

{1},{1,1},{1,2,1},{1,2,2,2,1},{1,3,4,4,3,1}, {1,3,5,7,7,5,3,1}...

CROSSREFS

Sequence in context: A110535 A033941 A053256 * A317989 A106032 A003646

Adjacent sequences:  A102415 A102416 A102417 * A102419 A102420 A102421

KEYWORD

nonn,tabf

AUTHOR

Paul Barry, Jan 08 2005

STATUS

approved

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Last modified December 8 18:37 EST 2019. Contains 329865 sequences. (Running on oeis4.)