A110385 a(1) = 3; a(n+1) = (a(n) + n)*(a(n) - n).

3, 8, 60, 3591, 12895265, 166287859420200, 27651652190552197880168039964, 764613868867270163545228802175958319343780390069501121247, 584634368464175013450777511329300527888604990906383317504017890900798292874089489710812952726292298514590194834945

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Maple

a[1]:=3: for n from 1 to 19 do a[n+1]:=(a[n]+n)*(a[n]-n) od: seq(a[n], n=1..9); # Emeric Deutsch, Jul 31 2005

Crossrefs

Sequence in context: A132517 A027262 A062358 * A333898 A224230 A053740

Adjacent sequences: A110382 A110383 A110384 * A110386 A110387 A110388

Keyword

easy,nonn

Author

Amarnath Murthy, Jul 25 2005

Extensions

More terms from Emeric Deutsch, Jul 31 2005

Status

approved