Square array A(n,k): number of integers having prime(n) as k-th factor when written as product of primes in nondecreasing order, in any interval of primorial(n)^k positive integers.
A281890
Square array A(n,k): number of integers having prime(n) as k-th factor when written as product of primes in nondecreasing order, in any interval of primorial(n)^k positive integers.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =2a(6) =1a(7) =19a(8) =62a(9) =8a(10) =1a(11) =65a(12) =1322a(13) =1976a(14) =48a(15) =1a(16) =211a(17) =24182a(18) =318392a(19) =140496a(20) =480a(21) =1a(22) =665a(23) =408842a(24) =42729464a(25) =260656752a(26) =19373280a(27) =5760a(28) =1a(29) =2059
External references
- oeis: A281890