1,4

Toshitaka Suzuki, Table of n, a(n) for n = 1..390

Index entries for sequences related to Egyptian fractions

a(n) = A020473(n) - A020473(n-1).

a(n) = 1 if n is prime.

a(4) = 2 since there are two fractions 1=1/2+1/4+1/4 and 1=1/4+1/4+1/4+1/4.

Cf. A020473, A092667, A092669, A002966, A000058, A259633.

Sequence in context: A160417 A117044 A280691 * A019426 A128747 A205945

Adjacent sequences: A092663 A092664 A092665 * A092667 A092668 A092669

nonn

Max Alekseyev, Mar 02 2004

Edited by Max Alekseyev, May 05 2010

approved