Primes of the form sigma(k) - tau(k), where sigma(k) = A000203(k) and tau(k) = A000005(k).

Terms

a(0) =2a(1) =11a(2) =353a(3) =1013a(4) =2333a(5) =16369a(6) =58579a(7) =65519a(8) =123733a(9) =1982273a(10) =7089683a(11) =5778653a(12) =12795053a(13) =10500593a(14) =22586027a(15) =19980143a(16) =24126653a(17) =67108837a(18) =72494713a(19) =90781993a(20) =106199593a(21) =203275951a(22) =164118923a(23) =183105421a(24) =320210549a(25) =259997173a(26) =794091653a(27) =1279963973