Numbers k such that if x = sigma(k) - k then k = x - phi(x), where phi(k) is the Euler totient function.

A239801

Numbers k such that if x = sigma(k) - k then k = x - phi(x), where phi(k) is the Euler totient function.

Terms

    a(0) =24a(1) =30a(2) =126a(3) =150a(4) =198a(5) =276a(6) =280a(7) =294a(8) =336a(9) =1644a(10) =3084a(11) =3750a(12) =5720a(13) =13482a(14) =47424a(15) =211884a(16) =11718750a(17) =51028120a(18) =75570560a(19) =88590144a(20) =260661280a(21) =7435072458a(22) =7440172542a(23) =19408312640a(24) =184390255062a(25) =410770687360

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