a(n) is the smallest number k > 0 such that k, k + 1, ... , k + n - 1 are nonprime numbers, but k + n is prime.

A230358

a(n) is the smallest number k > 0 such that k, k + 1, ... , k + n - 1 are nonprime numbers, but k + n is prime.

Terms

    a(0) =2a(1) =1a(2) =9a(3) =8a(4) =25a(5) =24a(6) =91a(7) =90a(8) =119a(9) =118a(10) =117a(11) =116a(12) =115a(13) =114a(14) =527a(15) =526a(16) =525a(17) =524a(18) =889a(19) =888a(20) =1131a(21) =1130a(22) =1339a(23) =1338a(24) =1337a(25) =1336a(26) =1335a(27) =1334a(28) =1333a(29) =1332

External references