A303910 Largest positive integer m with pi(m*n) = m + n, where pi(x) denotes the number of primes not exceeding x.

41, 148, 409, 998, 2597, 6424, 15889, 39970, 100192, 251637, 637063, 1617110, 4124272, 10553278, 27066824, 69709557, 179992524, 465769748, 1208198402, 3140421406, 8179001739, 21338685037, 55762148901, 145935688930, 382465573384, 1003652346785, 2636913002779

Offset: 5

Author

Chai Wah Wu, May 02 2018

Keywords

• nonn

Comments

a(n) >= A281197(n) >= A247600(n).

Crossrefs

Cf. A247600, A281197.