a(n+1) = a(n)-b(n+1) if a(n) >= b(n+1) else a(n)+b(n+1), where {b(n)} are the triangular numbers A000217.
A008345
a(n+1) = a(n)-b(n+1) if a(n) >= b(n+1) else a(n)+b(n+1), where {b(n)} are the triangular numbers A000217.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =10a(4) =0a(5) =15a(6) =36a(7) =8a(8) =44a(9) =89a(10) =34a(11) =100a(12) =22a(13) =113a(14) =8a(15) =128a(16) =264a(17) =111a(18) =282a(19) =92a(20) =302a(21) =71a(22) =324a(23) =48a(24) =348a(25) =23a(26) =374a(27) =752a(28) =346a(29) =781
External references
- oeis: A008345