OFFSET
0,1
EXAMPLE
a(1) = 4 because there are 4 steps to reach a previous value:
step 1: x = 3*1 +(2n+1) = 6
step 2: x = 6/2 = 3;
step 3: x = 3*3 +(2n+1) = 12
step 4: x = 12/2 = 6, which was the result of step 1
CROSSREFS
KEYWORD
nonn
AUTHOR
Bryan Jacobs (bryanjj(AT)gmail.com), Jan 06 2007
STATUS
approved