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A303614
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a(n) = [x^n] (1/5040 * Sum_{k=0..n} (k+7)!*x^k)^(1/4).
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3
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1, 2, 12, 100, 1016, 11904, 155896, 2237264, 34713216, 576780384, 10190672448, 190437245568, 3748465227360, 77458688700864, 1675826429735808, 37874833476394368, 892480151181131520, 21889831041022132224, 557997984025699216128
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OFFSET
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0,2
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LINKS
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PROG
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(PARI) N=66; x='x+O('x^N); Vec((1/7!*sum(k=0, N, (k+7)!*x^k))^(1/4))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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