0,3

M!! - N!! where M and N positive integers

7!! - 4!! = 7*5*3*1 - 4*2 = 105 - 8 = 97

9!! - 5!! = 9*7*5*3*1 - 5*3*1 = 945 - 15 = 930

Sequence in context: A058605 A103025 A134080 this_sequence A117548 A014489 A033959

Adjacent sequences: A111297 A111298 A111299 this_sequence A111301 A111302 A111303

easy,nonn

Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Nov 02 2005