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A163524 The pairs (x,y) such that x^2 = 1+factorial(y). 1
5, 4, 11, 5, 71, 7 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The main entry for this relation is the bisection in A146968.

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

71^2 = 7!+1, which introduces (71,7) into the sequence.

CROSSREFS

Sequence in context: A309545 A285105 A089520 * A051552 A165367 A166549

Adjacent sequences:  A163521 A163522 A163523 * A163525 A163526 A163527

KEYWORD

nonn,less

AUTHOR

Vincenzo Librandi, Jul 30 2009

EXTENSIONS

Reference to main sequence added by R. J. Mathar, Aug 02 2009

STATUS

approved

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Last modified October 17 22:16 EDT 2019. Contains 328134 sequences. (Running on oeis4.)