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A112406 (n+1)^((n+1)^n) - n^(n^(n-1)). 0
1, 3, 19679, 340282366920938463463374607431768191773 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

First differences of A053015. Since a(2) = 3 is prime, a(3) = 19679 is semiprime and a(4) has 6 prime factors. - Jonathan Vos Post, Dec 11 2005

LINKS

Table of n, a(n) for n=1..4.

FORMULA

Equally, 1-0, (2^2)-1, (3^3)^3 - 2^2, ((4^4)^4)^4 - (3^3)^3, ...

CROSSREFS

Cf. A053015.

Sequence in context: A182914 A203182 A128121 * A171364 A307670 A115475

Adjacent sequences:  A112403 A112404 A112405 * A112407 A112408 A112409

KEYWORD

nonn

AUTHOR

Daniel Kiteck, Dec 07 2005

STATUS

approved

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Last modified May 5 23:41 EDT 2021. Contains 343579 sequences. (Running on oeis4.)