login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A115734
Numbers k such that the digits of k^2 include the digits of the k-th prime as substring.
3
44, 2243463, 37035039, 3837982664
OFFSET
1,1
EXAMPLE
prime(44) = 193 and 44^2 = 193_6.
prime(224346) = 3112771 and 224346^2 = 50_33112771_6.
prime(37035039) = 715941137 and 37035039^2 = 13_715941137_31521.
prime(3837982664) = 92916453689 and 3837982664^2= 14730110_92916453689_6.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Giovanni Resta, Jan 30 2006
STATUS
approved