1,2

Table of n, a(n) for n=1..105.

Dario Alpern, Java Applet: Sum of squares

a(2)=2 because 2!=1^2+1^2; a(3)=3: 3!=6=2^2+1+1; a(6)=2: 6!=720=24^2+12^2

See link.

Cf. A000142, A001481, A000419, A004215, A084953.

Sequence in context: A236552 A080748 A305374 * A303432 A224748 A165494

Adjacent sequences: A084963 A084964 A084965 * A084967 A084968 A084969

nonn

Hugo Pfoertner, Jun 15 2003

approved