1,2

Table of n, a(n) for n=1..5.

906373=9!!^2+0!!^2+6!!^2+3!!^2+7!!^2+3!!^2.

Sequence in context: A325311 A164518 A198208 * A233789 A236151 A032427

Adjacent sequences: A139406 A139407 A139408 * A139410 A139411 A139412

base,fini,full,nonn

Farideh Firoozbakht, May 08 2008

approved