A163524 The pairs (x,y) such that x^2 = 1+factorial(y).

5, 4, 11, 5, 71, 7

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: A285105 A360682 A089520 * A330614 A051552 A165367

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