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A212310
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a(n) = n! mod 4^n.
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4
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0, 1, 2, 6, 24, 120, 720, 5040, 40320, 100736, 483072, 2168064, 9239552, 53005312, 205203456, 930568192, 2004189184, 12596379648, 54936141824, 81714020352, 534768779264, 1334539714560, 2971594653696, 68346677035008, 232945365286912, 1038559528091648, 2232749779845120
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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PROG
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(Python)
import math
print([math.factorial(n)%(4**n) for n in range(99)])
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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