47563407360
domain: N
Appears in sequences
- a(0) = 1; for n > 0, a(n) = n!*4^n/2.at n=9A051711
- Denominators in expansion of W(exp(x)) about x=1, where W is the Lambert function.at n=9A274448
- Denominators of the rational factor of Kaplan's series for the Dottie number.at n=4A306254
- a(n) = pos(M(n)), where M(n) is the n X n matrix with every term = 4, and pos(M(n)) is the positive part of the determinant of M(n); see A380661.at n=8A381724