A B_2 sequence: a(n) is the least value such that sequence increases and pairwise sums of elements are all distinct.
A025582
A B_2 sequence: a(n) is the least value such that sequence increases and pairwise sums of elements are all distinct.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =7a(4) =12a(5) =20a(6) =30a(7) =44a(8) =65a(9) =80a(10) =96a(11) =122a(12) =147a(13) =181a(14) =203a(15) =251a(16) =289a(17) =360a(18) =400a(19) =474a(20) =564a(21) =592a(22) =661a(23) =774a(24) =821a(25) =915a(26) =969a(27) =1015a(28) =1158a(29) =1311
External references
- oeis: A025582