Smallest nonnegative number m such that m == i (mod i+1) for all 1 <= i <= n.

Terms

a(0) =0a(1) =1a(2) =5a(3) =11a(4) =59a(5) =59a(6) =419a(7) =839a(8) =2519a(9) =2519a(10) =27719a(11) =27719a(12) =360359a(13) =360359a(14) =360359a(15) =720719a(16) =12252239a(17) =12252239a(18) =232792559a(19) =232792559a(20) =232792559a(21) =232792559a(22) =5354228879a(23) =5354228879a(24) =26771144399a(25) =26771144399a(26) =80313433199a(27) =80313433199