Partition of positive numbers into shortest possible groups (1), (2,3), (4,5,6), (7,8), ... such that a(n) = the sum of the terms of the n-th group is a multiple of a(n-1).

A160275

Partition of positive numbers into shortest possible groups (1), (2,3), (4,5,6), (7,8), ... such that a(n) = the sum of the terms of the n-th group is a multiple of a(n-1).