A179223 Iterative mapping with offset: a(1)=1, a(n)=A095904(a(n-1)-1).

1, 2, 3, 4, 5, 9, 10, 8, 25, 343, 3969, 13090, 73344, 77398016

Offset

1,2

Comments

a(15) is greater than 10^11 and of the form (p^10)(q^5)(r^2)(s^2)tu, where p, q, r, s, t and u are distinct primes.

Links

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

Will Nicholes, Iterative mapping of prime signatures.

Crossrefs

Cf. A095904, A179224.

Sequence in context: A360069 A052270 A265335 * A069117 A098464 A068586

Adjacent sequences: A179220 A179221 A179222 * A179224 A179225 A179226

Keyword

nonn

Author

Will Nicholes, Jul 10 2010

Status

approved