A166701 Totally multiplicative sequence with a(p) = a(p-1) + 4 for prime p.

1, 5, 9, 25, 29, 45, 49, 125, 81, 145, 149, 225, 229, 245, 261, 625, 629, 405, 409, 725, 441, 745, 749, 1125, 841, 1145, 729, 1225, 1229, 1305, 1309, 3125, 1341, 3145, 1421, 2025, 2029, 2045, 2061, 3625, 3629, 2205, 2209, 3725, 2349, 3745, 3749, 5625, 2401

Offset

1,2

Links

Table of n, a(n) for n=1..49.

Formula

Multiplicative with a(p^e) = (a(p-1)+4)^e. If n = Product p(k)^e(k) then a(n) = Product (a(p(k)-1)+4)^e(k).

Crossrefs

Sequence in context: A165345 A177240 A074741 * A116520 A273561 A273746

Adjacent sequences: A166698 A166699 A166700 * A166702 A166703 A166704

Keyword

nonn,mult

Author

Jaroslav Krizek, Oct 18 2009

Status

approved