a(1)=1. a(n) = a(n-1) + (sum of the earlier terms {among terms a(1) through a(n-1)} which are coprime to n).
A127075
a(1)=1. a(n) = a(n-1) + (sum of the earlier terms {among terms a(1) through a(n-1)} which are coprime to n).
Terms
- a(0) =1a(1) =2a(2) =5a(3) =11a(4) =25a(5) =67a(6) =178a(7) =287a(8) =863a(9) =2092a(10) =5612a(11) =6871a(12) =22885a(13) =53613a(14) =69597a(15) =223822a(16) =385931a(17) =802877a(18) =2308019a(19) =5936156a(20) =12937623a(21) =29456690a(22) =81587807a(23) =166703456a(24) =437728341a(25) =973247233a(26) =2233938123a(27) =4919445412a(28) =13784085189a(29) =14842425156
External references
- oeis: A127075