Triangle read by rows: T(n,k) = arithmetic derivative of (1 + A002110(n) + A002110(k)), 1 <= k <= n, where A002110(n) is the n-th primorial number.

A373845

Triangle read by rows: T(n,k) = arithmetic derivative of (1 + A002110(n) + A002110(k)), 1 <= k <= n, where A002110(n) is the n-th primorial number.

Terms

    a(0) =1a(1) =6a(2) =1a(3) =14a(4) =1a(5) =1a(6) =74a(7) =38a(8) =1a(9) =1a(10) =1551a(11) =338a(12) =1a(13) =1a(14) =1a(15) =21084a(16) =8631a(17) =1330a(18) =1a(19) =1a(20) =3550a(21) =172655a(22) =72938a(23) =1970a(24) =3410a(25) =1a(26) =1a(27) =5822a(28) =3233234a(29) =4157356

External references