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A090444
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Fifth column (m=4) of triangle A090441.
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1
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1, 24, 2880, 1036800, 870912000, 1463132160000, 4424511651840000, 22299538725273600000, 176612346704166912000000, 2098154678845502914560000000, 36004334288988830013849600000000
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n) = (n+3)!*(n+2)!*(n+1)!*n!/12, n>=0. 12=A000178(3) (superfactorial).
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PROG
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(PARI) a(n) = (n+3)!*(n+2)!*(n+1)!*n!/12; \\ Michel Marcus, Feb 12 2019
(Python)
from math import factorial
def A090444(n): return factorial(n)**4*(n+3)*(n+2)**2*(n+1)**3//12 # Chai Wah Wu, Apr 22 2024
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CROSSREFS
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KEYWORD
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nonn,easy,changed
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AUTHOR
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STATUS
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approved
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