Square array read by antidiagonals in which T(n,k) is the n-th even number j with the property that the symmetric representation of sigma(j) has k parts.

A320537

Square array read by antidiagonals in which T(n,k) is the n-th even number j with the property that the symmetric representation of sigma(j) has k parts.

Terms

    a(0) =2a(1) =4a(2) =10a(3) =6a(4) =14a(5) =50a(6) =8a(7) =22a(8) =70a(9) =230a(10) =12a(11) =26a(12) =98a(13) =250a(14) =1150a(15) =16a(16) =34a(17) =110a(18) =290a(19) =1250a(20) =5050a(21) =18a(22) =38a(23) =130a(24) =310a(25) =1450a(26) =5150a(27) =22310a(28) =20a(29) =44

External references