A103896 Euler's totient of prime(n)! / prime(n)# + 1.

1, 1, 4, 20, 15700, 161520, 659739168, 11887243200, 115875912594352, 1360481062410358294032, 40999220870977029249072, 1854483563489396099991763032000, 106016408292727234808287504322403328

Offset

1,3

Links

Amiram Eldar, Table of n, a(n) for n = 1..30

Reinhard Zumkeller, p(n)!/p(n )#+1

Formula

a(n) = A000010(A103890(n)).

Crossrefs

Cf. A000010, A103861, A103890.

Sequence in context: A332867 A217369 A146342 * A244955 A272969 A327085

Adjacent sequences: A103893 A103894 A103895 * A103897 A103898 A103899

Keyword

nonn

Author

Reinhard Zumkeller, Feb 20 2005

Status

approved