Group the natural numbers so that the product of members of a group is a multiple of the sum: (1),(2,3,4,5,6),(7,8,9),(10,11,12),(13,14,15),(16,17,18),(19,20,21),(22,23,24),.... This is the sequence of the ratio of product /sum.
A074155
Group the natural numbers so that the product of members of a group is a multiple of the sum: (1),(2,3,4,5,6),(7,8,9),(10,11,12),(13,14,15),(16,17,18),(19,20,21),(22,23,24),.... This is the sequence of the ratio of product /sum.
Terms
- a(0) =1a(1) =36a(2) =21a(3) =40a(4) =65a(5) =96a(6) =133a(7) =176a(8) =225a(9) =280a(10) =341a(11) =408a(12) =481a(13) =560a(14) =645a(15) =736a(16) =833a(17) =936a(18) =1045a(19) =1160a(20) =1281a(21) =1408a(22) =1541a(23) =1680a(24) =1825a(25) =1976a(26) =2133a(27) =2296a(28) =2465a(29) =2640
External references
- oeis: A074155