Kieran Larkin
is Erdös
#4:
because
Colin Sheppard is #3
Colin J. R. Sheppard, Sam
Campbell, and Michael D. Hirschhorn,
"Zernike Expansion of Separable Functions of Cartesian Coordinates,"
Appl. Opt. 43, 3963-3966 (2004)
and
Michael Hirschhorn is #2
M. D. Hirschhorn; M. V.
Subbarao,
"On the parity of p(n)",
Acta Arith., L (1988), 355-356.
and
MATHUKUMALLI VENKATA Subbarao is #1
P. Erdös and M. V.
Subbarao,
"On the iterates of some arithmetic functions",
in The Theory of
Arithmetic Functions,
Lecture Notes in Mathematics, 1972, Volume 251/1972, p119-125,
The Erdös Number Project
http://www.oakland.edu/enp/