A186778 -id:A186778 - cp's OEIS frontend

A186780 Solutions n of equation A064380(n)-A000010(n)=4 in integers n>=2.

22, 25, 26, 32, 51, 57, 115, 135, 136, 145, 189, 203, 217, 297, 517, 583, 689, 767, 793, 1207, 1241, 1343, 1411, 1501, 1577, 1691, 2231, 2323, 2369, 2461, 2507, 2599, 3683, 3799, 3937, 3973, 4031, 4061, 4247, 4309, 4619, 4681, 5513, 5587, 5809, 6031, 6179, 6401

Offset: 1

Vladimir Shevelev, Feb 26 2011

nonn

The sequence is infinite.

V. S. Shevelev, Multiplicative functions in the Fermi-Dirac arithmetic, Izvestia Vuzov of the North-Caucasus region, Nature sciences 4 (1996), 28-43.

Amiram Eldar, Table of n, a(n) for n = 1..250

Cf. A000010, A064380, A176472, A176509, A186777, A186778, A186779.

More terms from Amiram Eldar, Sep 14 2019

A186781 Integer solutions x to the equation A064380(x)-A000010(x)=5.

Original entry on oeis.org

18, 20, 30, 34, 42, 69, 152, 155, 259, 287, 351, 459, 513, 649, 671, 871, 923, 949, 1513, 1649, 1717, 1843, 1919, 1957, 2033, 2071, 2147, 2921, 3013, 3151, 4321, 4379, 4553, 4727, 4843, 4867, 5017, 5053, 5177, 5363, 5549, 5611, 7067, 7141, 7289, 7363, 7807, 8651

Offset: 1

Vladimir Shevelev, Feb 26 2011

nonn

The defining equation has infinitely many solutions, see A176472.

V. S. Shevelev, Multiplicative functions in the Fermi-Dirac arithmetic, Izvestia Vuzov of the North-Caucasus region, Nature sciences 4 (1996), 28-43.

Amiram Eldar, Table of n, a(n) for n = 1..200

Cf. A000010, A064380, A176472, A176509, A186777, A186778, A186779, A186780.

More terms from Amiram Eldar, Sep 14 2019

cp's OEIS Frontend

A186780 Solutions n of equation A064380(n)-A000010(n)=4 in integers n>=2.

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