Smallest prime p such that there is a gap of sigma(n) between p and the next prime, otherwise 0.

Terms

a(0) =2a(1) =0a(2) =7a(3) =0a(4) =23a(5) =199a(6) =89a(7) =0a(8) =0a(9) =523a(10) =199a(11) =2971a(12) =113a(13) =1669a(14) =1669a(15) =0a(16) =523a(17) =0a(18) =887a(19) =16141a(20) =5591a(21) =9551a(22) =1669a(23) =43331a(24) =0a(25) =16141a(26) =19333a(27) =82073a(28) =4297a(29) =31397