A259868 a(n) = n*A004141(n).

1, 4, 24, 192, 1280, 7680, 48384, 315392, 1916928, 11182080, 72089600, 441188352, 2589982720, 15863644160, 97493975040, 578813952000, 3411143557120, 21023026053120, 125795699785728, 733623363829760, 4459657816965120, 26839963597275136, 157885776644800512

Offset: 1

Author

N. J. A. Sloane, Jul 09 2015

Keywords

• nonn

Links

• D. W. Kammler and R. J. McGlinn, Local conditioning of parametric forms used to approximate continuous functions, Amer. Math. Monthly, 86 (1979), 841-845.
• D. W. Kammler and R. J. McGlinn, Local conditioning of parametric forms used to approximate continuous functions, Amer. Math. Monthly, 86 (1979), 841-845. [Annotated scan of page 843 only]

Crossrefs

Cf. A004140.