First member of a pair of numbers occurring in the definition of 1-happy couples.
A191860
First member of a pair of numbers occurring in the definition of 1-happy couples.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =3a(4) =3a(5) =1a(6) =18a(7) =4a(8) =4a(9) =13a(10) =1a(11) =3a(12) =5a(13) =5a(14) =3a(15) =70a(16) =1a(17) =1a(18) =6a(19) =6a(20) =3a(21) =3a(22) =32a(23) =59a(24) =3a(25) =4a(26) =7a(27) =7a(28) =9a(29) =182
External references
- oeis: A191860