A145309 Numbers x such that there exists n in N : (x+1)^3-x^3=79*n^2.

97, 44489542, 20300667221737, 9263235054568775182, 4226832681849540586103377, 1928712206384045833465574584822, 880075237193226049220159073617573017

Offset

1,1

Links

Table of n, a(n) for n=1..7.

Index entries for linear recurrences with constant coefficients, signature (456303,-456303,1).

Formula

a(n) = 456302*a(n-1) - a(n-2) + 228150.

G.f.: x*(98*x^2-228151*x-97)/((x-1)*(x^2-456302*x+1)). - Colin Barker, Aug 24 2012

Example

a(1)=97 because the first relation is : 98^3-97^3=79*19^2.

Crossrefs

Sequence in context: A209475 A186167 A322606 * A122128 A114430 A258765

Adjacent sequences: A145306 A145307 A145308 * A145310 A145311 A145312

Keyword

easy,nonn,changed

Author

Richard Choulet, Oct 06 2008

Status

approved