Number of representations of n as a sum of products of pairs of positive integers, n = Sum_{k=1..m} i_k*j_k with i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_k*j_k<=i_{k+1}*j_{k+1}.
A212214
Number of representations of n as a sum of products of pairs of positive integers, n = Sum_{k=1..m} i_k*j_k with i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_k*j_k<=i_{k+1}*j_{k+1}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =8a(6) =14a(7) =18a(8) =29a(9) =39a(10) =57a(11) =74a(12) =109a(13) =138a(14) =192a(15) =247a(16) =335a(17) =421a(18) =565a(19) =703a(20) =926a(21) =1151a(22) =1484a(23) =1828a(24) =2349a(25) =2868a(26) =3624a(27) =4423a(28) =5538a(29) =6706
External references
- oeis: A212214