Numbers k such that sigma(k) + tau(k) + phi(k) is a prime, where sigma(k) = A000203(k), tau(k) = A000005(k) and phi(k) = A000010(k).

A229265

Numbers k such that sigma(k) + tau(k) + phi(k) is a prime, where sigma(k) = A000203(k), tau(k) = A000005(k) and phi(k) = A000010(k).

Terms

    a(0) =1a(1) =8a(2) =200a(3) =512a(4) =968a(5) =1458a(6) =3200a(7) =4232a(8) =5618a(9) =5832a(10) =6962a(11) =10368a(12) =16928a(13) =26912a(14) =36992a(15) =40328a(16) =53792a(17) =61952a(18) =84050a(19) =101250a(20) =110450a(21) =140450a(22) =147968a(23) =220448a(24) =247808a(25) =249218a(26) =253472a(27) =257762a(28) =279752a(29) =282752

External references