a(1) = 1; a(n) > 0; for each k from 1 to n, k divides a(n) or a(n)+1 and a(n) is the least such integer.

A064219

a(1) = 1; a(n) > 0; for each k from 1 to n, k divides a(n) or a(n)+1 and a(n) is the least such integer.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =15a(5) =24a(6) =35a(7) =119a(8) =504a(9) =720a(10) =2519a(11) =2519a(12) =41040a(13) =83160a(14) =83160a(15) =196559a(16) =524160a(17) =524160a(18) =3160079a(19) =3160079a(20) =3160079a(21) =3160079a(22) =68468400a(23) =68468400a(24) =68468400a(25) =68468400a(26) =4724319600a(27) =4724319600a(28) =26702675999a(29) =26702675999

External references