57657

Appears in sequences

• n times n+7 gives the concatenation of two numbers m and m+1.at n=6A116298
• a(n) = 10*a(n-1) - 23*a(n-2) for n > 1; a(0) = 5, a(1) = 33.at n=5A164538
• Row sums of triangle A201146.at n=13A201156