This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A070713 Integers whose sum of digits as well as product of digits is a nonzero square. 0
 1, 4, 9, 22, 88, 144, 414, 441, 466, 646, 664, 889, 898, 988, 1111, 1177, 1224, 1242, 1339, 1393, 1422, 1717, 1771, 1933, 2124, 2142, 2214, 2241, 2266, 2338, 2383, 2412, 2421, 2626, 2662, 2833, 3139, 3193, 3238, 3283, 3319, 3328, 3355, 3382, 3391, 3535 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE 3931 is a member of this sequence as 3+9+3+1=16=4^2 and 3*9*3*1=81=9^2. CROSSREFS Sequence in context: A231213 A231338 A257272 * A060250 A138991 A138990 Adjacent sequences:  A070710 A070711 A070712 * A070714 A070715 A070716 KEYWORD nonn,base AUTHOR John E. Lenz (jel5010(AT)yahoo.com), May 13 2002 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 13 22:55 EST 2019. Contains 329974 sequences. (Running on oeis4.)