Numbers k such that the sum of first k Catalan numbers is a prime.
A134775
Numbers k such that the sum of first k Catalan numbers is a prime.
Terms
- a(0) =2a(1) =9a(2) =11a(3) =31a(4) =46a(5) =146a(6) =795a(7) =2773a(8) =2788a(9) =9797a(10) =38289a(11) =39192a(12) =40857a(13) =41203a(14) =47380
External references
- oeis: A134775