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A362375
a(n) = rad((2n-1)!/(n-1)!).
0
1, 6, 30, 210, 210, 2310, 30030, 30030, 510510, 9699690, 9699690, 223092870, 223092870, 223092870, 6469693230, 200560490130, 200560490130, 200560490130, 7420738134810, 7420738134810, 304250263527210, 13082761331670030, 13082761331670030, 614889782588491410
OFFSET
1,2
COMMENTS
Squarefree kernel of the product of the larger parts of the partitions of 2n into 2 parts.
FORMULA
a(n) = A007947(A000407(n-1)).
PROG
(PARI) a(n) = factorback(factorint((2*n-1)!/(n-1)!)[, 1]); \\ Michel Marcus, May 01 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Wesley Ivan Hurt, Apr 30 2023
STATUS
approved