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A081033
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6th binomial transform of the periodic sequence (1,7,1,1,7,1...).
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3
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1, 13, 121, 997, 7729, 57853, 423721, 3059797, 21887329, 155555053, 1100604121, 7762822597, 54632726929, 383893932253, 2694581744521, 18898693305397, 132473958606529, 928233237589453, 6502210299844921, 45538360282508197
(list; graph; refs; listen; history; internal format)
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