A300748 Least prime divisor of A300629(n).

3, 5, 7, 13, 17, 41, 43, 53, 101, 109, 113, 151, 211, 281, 307, 331, 337, 461, 617, 727, 739, 827, 1033, 1301, 1481, 1531, 1723, 1901, 2161, 2351, 2381, 2633, 2647, 2801, 3371, 3931, 4933, 5653, 5743, 6791, 6917, 7561, 8059, 9521, 10369, 11503, 11551, 12161, 17579, 17839, 18433, 20593, 21061, 23581, 26731, 30241

Offset: 1

Author

Max Alekseyev, Mar 11 2018

Keywords

• nonn

Comments

For m > 2, A135720(m) = A083876(m-1) if and only if a(n) = prime(m).

Links

• Max Alekseyev, Table of n, a(n) for n = 1..138

Crossrefs

Cf. A002997, A020639, A083876, A285549, A300629.

Formula

a(n) = A020639(A300629(n)).