65230

Appears in sequences

• a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n+1-k), where k = [ (n+1)/2 ], s = (1, p(1), p(2), ...).at n=41A024479
• a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ], s = (1, p(1), p(2), ...).at n=40A025099
• Numbers whose sum of aliquot parts is equal to the sum of some fixed power of their digits.at n=15A269670
• Number of compositions (ordered partitions) of n into at most 6 prime powers (including 1).at n=33A347776