A th
order multimagic series is a set of
distinct integers from 1 through
whose sums of
th powers equal the degree-
magic constant for each
, 2, ...,
, where
and
are positive integers.
The case
is a magic series, with magic
constant
(Kraitchik 1942, p. 143). In general, the degree- magic constant is
where
is a generalized harmonic number of order
.
For example
is bimagic since
and
.
It is also trimagic since
. Similarly,
is trimagic.
The numbers of multimagic series of various lengths are given in the following table for small orders
(Kraitchik 1942, p. 76; Boyer), where the
, 3, and 4 values were corrected and extended by Boyer and
Trump in 2002.