61835

Appears in sequences

• Number of twin Harshads, including overlaps, whose sum is prime and where the 2nd Harshad is <= 10^n.at n=7A060291
• Area of annuli of consecutive integer thickness.at n=26A114378
• n times n+6 gives the concatenation of two numbers m and m-4.at n=3A116262
• Number of 10 X 2 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2*n^2 (number of collections of 10 zero-sum 2-vectors with total modulus squared not more than 2*n^2, ignoring vector and component permutations).at n=15A192711