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A179226 Iterative mapping with offset: a(1)=1927639, a(n)=A179216(a(n-1)-1). 2
1927639, 48828, 2069, 735, 664, 118, 46, 36, 19, 15, 11, 12, 27, 169, 57, 100, 279841 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(18) is greater than 10^8 and of the form (p^16)qr, where p, q and r are distinct primes. Of the sequences of type a(n) = A179216(a(n-1)-1), this contains the smallest integer (11) that is part of an unknown sequence type (i.e. it is unknown if this sequence continues indefinitely in both directions, is part of a loop, or is part of the sequence A179225.)

LINKS

Table of n, a(n) for n=1..17.

Will Nicholes, Iterative mapping of prime signatures.

CROSSREFS

Cf. A179216, A179225.

Sequence in context: A133542 A215568 A186802 * A166002 A285390 A069339

Adjacent sequences:  A179223 A179224 A179225 * A179227 A179228 A179229

KEYWORD

nonn

AUTHOR

Will Nicholes, Jul 10 2010

STATUS

approved

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Last modified September 24 04:27 EDT 2017. Contains 292403 sequences.