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A028005
Expansion of 1/((1-2x)(1-7x)(1-8x)(1-9x)).
0
1, 26, 437, 6034, 74469, 855042, 9338629, 98346578, 1007581157, 10104420898, 99624776901, 968871159282, 9317203571365, 88769381856194, 839190346712453, 7881486986566546, 73610099911105893, 684230318175538530
OFFSET
0,2
FORMULA
a(n)=(15*9^(n+3)-35*8^(n+3)+3*7^(n+4)-2^(n+3))/210. [Yahia Kahloune, Jun 05 2013]
CROSSREFS
Sequence in context: A028079 A028117 A028076 * A028065 A028113 A026562
KEYWORD
nonn
AUTHOR
STATUS
approved