A179221 Iterative mapping: a(1)=0, a(n)=A179216(a(n-1)).

0, 2, 3, 6, 8, 25, 21, 24, 343, 195, 486, 5929, 35568, 1450800

Offset

1,2

Comments

a(15) is greater than 10^7 and of the form (p^5)(q^4)rs where p, q, r and s are distinct primes.

Links

Table of n, a(n) for n=1..14.

Will Nicholes, Iterative mapping of prime signatures.

Crossrefs

Cf. A179216, A179222.

Sequence in context: A351853 A224211 A187026 * A350119 A103964 A199790

Adjacent sequences: A179218 A179219 A179220 * A179222 A179223 A179224

Keyword

nonn

Author

Will Nicholes, Jul 10 2010

Status

approved