NO its not arith or geometrik...look like random mix av 2 sequenses
2,4,3,6,10,9,18
if yu pik out sum numbers, yu almost get sens
2*3=6 & 2*9=18 or 3*6=18...but wot tu du bout 9 & 10?????
3, 6, 9 look like arithmatik, but wot bout all the other numbers?
or 2, 4, 6 (blank) 10 look like arithmatik, but wot bout the others?