OFFSET
2,1
FORMULA
D-finite with recurrence a(n) +(-n-2)*a(n-1) +(2*n-1)*a(n-2) +3*(-n+4)*a(n-3)=0. - R. J. Mathar, Jul 30 2024
MAPLE
A374649 := proc(n)
n!-2*(n-1)!+3*(n-2)! ;
end proc:
seq(A374649(n), n=2..50) ; # R. J. Mathar, Jul 30 2024
MATHEMATICA
Table[n! - 2 (n - 1)! + 3 (n - 2)!, {n, 2, 25}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jul 25 2024
STATUS
approved