Let R(i,j) be the rectangle with antidiagonals 1; 2,3; 4,5,6; ...; each k is an R(i(k),j(k)) and A057047(n)=j(2^n).

A057047

Let R(i,j) be the rectangle with antidiagonals 1; 2,3; 4,5,6; ...; each k is an R(i(k),j(k)) and A057047(n)=j(2^n).

Terms

    a(0) =1a(1) =2a(2) =3a(3) =3a(4) =6a(5) =5a(6) =3a(7) =9a(8) =21a(9) =17a(10) =12a(11) =33a(12) =91a(13) =65a(14) =88a(15) =129a(16) =168a(17) =257a(18) =307a(19) =513a(20) =501a(21) =1025a(22) =553a(23) =2049a(24) =5106a(25) =4097a(26) =3042a(27) =8193a(28) =580a(29) =16385

External references