Numbers n such that psi(n) and sigma(n) both are perfect squares and n is not a squarefree number.

A291638

Numbers n such that psi(n) and sigma(n) both are perfect squares and n is not a squarefree number.

Terms

    a(0) =370440a(1) =1704024a(2) =3926664a(3) =11039112a(4) =13854456a(5) =21707784a(6) =25264008a(7) =28375704a(8) =40822488a(9) =44378712a(10) =57862728a(11) =59196312a(12) =63937944a(13) =75051144a(14) =79051896a(15) =79940952a(16) =103500936a(17) =107946216a(18) =128394504a(19) =134766072a(20) =162178632a(21) =169735608a(22) =177737112a(23) =191517480a(24) =193530168a(25) =195221880a(26) =196407288a(27) =215077464

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