1,6

Sequence suggested by Leroy Quet in SeqFan memo 3500 dated Feb 02 2004, where the first fifteen terms were given.

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

a(55)=6, since 55 = 1+2+3+4+5+6+7+8+9+10 = 1*2*3+4+5+6+7+8+9+10 = 1*2+3+4*5+6+7+8+9 = 1+2+3+4+5*6+7+8 = 1*2*3+4+5*6+7+8 = 1+2*3*4+5*6.

Sequence in context: A155077 A170968 A114114 * A229707 A262680 A191329

Adjacent sequences: A090784 A090785 A090786 * A090788 A090789 A090790

nonn

John W. Layman, Feb 09 2004

approved