53000

Appears in sequences

• Denominators of continued fraction convergents to sqrt(89).at n=9A041159
• Denominators of continued fraction convergents to sqrt(801).at n=9A042545
• Numbers whose square has more than 2/3 of its digits the same.at n=34A060813
• Let p = n-th prime, take smallest solution (x,y) to the Pellian equation x^2 - p*y^2 = 1 with x and y >= 1; sequence gives value of y.at n=23A081234
• Let p = n-th prime of the form 4k+1, take the integer solution (x,y) to the Pellian equation x^2 - p*y^2 = 1 with the smallest y >= 1; sequence gives value of y.at n=9A082393
• Number of partitions of n having no doubletons. By a doubleton in a partition we mean an occurrence of a part exactly twice (the partition [4,(3,3),2,2,2,(1,1)] of 18 has two doubletons, shown between parentheses).at n=48A116645
• a(n) = 297754*n - 244754.at n=0A157758
• Products of consecutive terms of the Padovan sequence A000931.at n=25A329227
• a(n) = Sum_{k=1..n-1} lcm(lcm(n, k), lcm(n, n-k)).at n=24A338798