a(n) is the smallest number which can be represented as the sum of n distinct n-almost primes in exactly n ways, or -1 if no such number exists.
A365494
a(n) is the smallest number which can be represented as the sum of n distinct n-almost primes in exactly n ways, or -1 if no such number exists.
Terms
- a(0) =2a(1) =19a(2) =65a(3) =190a(4) =440a(5) =1160a(6) =2896a(7) =7072a(8) =16832a(9) =40064a(10) =90752a(11) =208640a(12) =476160a(13) =1082880a(14) =2398208a(15) =5310464a(16) =11694080a(17) =25616384a(18) =56475648a(19) =122388480a(20) =266010624a(21) =575012864a(22) =1245446144a(23) =2699034624a(24) =5779750912a(25) =12296650752a(26) =26377977856a(27) =55855546368a(28) =118656860160a(29) =255458279424
External references
- oeis: A365494