a(n) is the smallest number which can be represented as the sum of n n-almost primes in exactly n ways, or -1 if no such number exists.

A365493

a(n) is the smallest number which can be represented as the sum of n n-almost primes in exactly n ways, or -1 if no such number exists.

Terms

    a(0) =2a(1) =18a(2) =44a(3) =112a(4) =418a(5) =776a(6) =1408a(7) =3072a(8) =7040a(9) =14848a(10) =53056a(11) =77312a(12) =147456a(13) =315392a(14) =988160a(15) =5310464a(16) =3194880a(17) =6225920a(18) =12845056a(19) =46252032a(20) =76873728a(21) =117440512a(22) =258998272a(23) =1072824320a(24) =1111490560a(25) =3379560448a(26) =5192548352a(27) =9261023232a(28) =24243077120a(29) =41204842496

External references