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A028033
Expansion of 1/((1-3x)(1-4x)(1-6x)(1-8x)).
0
1, 21, 283, 3129, 31003, 287217, 2547091, 21931833, 185027755, 1538650113, 12663786499, 103454051337, 840560481307, 6802315926609, 54886579262707, 441905197121241, 3552134005816459, 28518494951667105
OFFSET
0,2
FORMULA
a(n)=(3*8^(n+3)-10*6^(n+3)+15*4^(n+3)-8*3^(n+3))/120. [Yahia Kahloune, May 27 2013].
CROSSREFS
Sequence in context: A028053 A223996 A323063 * A176711 A025987 A125456
KEYWORD
nonn,easy
AUTHOR
STATUS
approved