A036235 Found on a quiz long ago.

5, 22, 121, 496

Offset

0,1

Comments

Suggestion from Rickey Bowers Jr, May 18 2006:

a(0) = 5,

a(1) = 2 * prime(5),

a(2) = (prime(5))^2,

a(3) = 2^4 * prime(prime(5)),

a(4) = (prime(prime(5)))^(2^4),

...

a(2n-1) = (2^(n^2)) * prime^n(a(0)),

a(2n) = prime^n(a(0))^(2^(n^2)).

Links

Table of n, a(n) for n=0..3.

C. Rivera, Puzzle 38

Crossrefs

Sequence in context: A131460 A326341 A062794 * A159596 A020077 A265998

Adjacent sequences: A036232 A036233 A036234 * A036236 A036237 A036238

Keyword

nonn,unkn

Author

Anonymous

Status

approved