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A025939
Expansion of 1/((1-2x)(1-3x)(1-6x)(1-9x)).
0
1, 20, 265, 2960, 30301, 295340, 2795905, 25996520, 238988101, 2181067460, 19810829545, 179385327680, 1620996705901, 14628147660380, 131888407103185, 1188406175868440, 10704118783463701, 96387848642218100
OFFSET
0,2
FORMULA
a(n) = -6^(n+1)-2^(n+1)/7 +3^(n+1)/2 +9^(n+2)/14. - R. J. Mathar, Jun 04 2013
CROSSREFS
Sequence in context: A278408 A229562 A021854 * A278773 A021824 A125455
KEYWORD
nonn
AUTHOR
STATUS
approved