1,1

This is the ratio of the multiplication and addition of successive terms in A339107. See that sequence for further details.

Table of n, a(n) for n=1..75.

Scott R. Shannon, Line graph of the first 100000 terms.

a(1) = 2 as A339107(1) = 3 and A339107(2) = 6, and 3*6/(3+6) = 2.

Cf. A339107, A063647, A027750, A000040, A098550, A336957, A064413.

Sequence in context: A086354 A014257 A247576 * A246821 A212885 A319078

Adjacent sequences: A339130 A339131 A339132 * A339134 A339135 A339136

nonn

Scott R. Shannon, Nov 24 2020

approved