Triangle read by rows: T(n,k) is the number of primes in the half-open interval [10^n, 10^n + 10^k), n >= 1, 1 <= k <= n.

A323744

Triangle read by rows: T(n,k) is the number of primes in the half-open interval [10^n, 10^n + 10^k), n >= 1, 1 <= k <= n.

Terms

    a(0) =4a(1) =4a(2) =21a(3) =1a(4) =16a(5) =135a(6) =2a(7) =11a(8) =106a(9) =1033a(10) =1a(11) =6a(12) =81a(13) =861a(14) =8392a(15) =1a(16) =6a(17) =75a(18) =753a(19) =7216a(20) =70435a(21) =0a(22) =2a(23) =61a(24) =614a(25) =6241a(26) =61938a(27) =606028a(28) =1a(29) =6

External references