A159001 First part "s" of A159000(n).

33, 19, 3, 5, 1209, 39, 4515, 54, 628, 695, 7, 3008, 374, 5, 17, 46, 5, 119, 1, 193933, 2438553, 24, 37, 3776, 54, 582, 1010472, 1067915, 2248, 46, 8080756, 811, 98, 10089515, 10538, 267794, 333070617, 334134, 561868, 159, 176, 1, 337435, 3, 37, 4677, 801, 101123, 13394006, 1714212, 377

Offset: 1

Author

Farideh Firoozbakht, Jun 07 2009

Keywords

• nonn
• base

Examples

			A159000(1) = 3360 = phi(33)*sigma(60) so a(1) = 33.
A159000(5) = 451584 = phi(4515)*sigma(84) so a(5) = 4515.
		

Crossrefs

Cf. A000010, A000203, A159000.

Formula

a(n) = floor(A159000(n)/10^l), where l is such that phi(floor(A159000(n)/10^l)) * sigma(A159000(n)%10^l) = A159000(n). - Max Alekseyev, May 26 2025

Extensions

a(3), a(4), a(11) and more terms added using A159000 by Amiram Eldar, Mar 18 2024

a(34)-a(51) from Max Alekseyev, May 26 2025