Numbers whose square is the concatenation of two numbers k and k-2.
A115442
Numbers whose square is the concatenation of two numbers k and k-2.
Terms
- a(0) =8a(1) =7312a(2) =8991a(3) =32524a(4) =67477a(5) =76568a(6) =4891730a(7) =5108271a(8) =8528094a(9) =71588336a(10) =98999901a(11) =399659933007a(12) =600340066994a(13) =723627738227a(14) =877712329768a(15) =998999999001
External references
- oeis: A115442