43660

Appears in sequences

• Triangular numbers whose digit permutations yield at least two further triangular numbers.at n=25A069674
• Triangular numbers whose sum of prime factors (with repetition) is also triangular.at n=25A076169
• Triangular numbers that are sums of two consecutive primes.at n=31A111163
• Triangle T(n, k) = binomial(n+1, k)*A142458(n+1, k+1)/(k+1), read by rows.at n=29A155491
• Triangle T(n, k) = binomial(n+1, k)*A142458(n+1, k+1)/(k+1), read by rows.at n=34A155491
• Number of nX2 0..1 arrays with no adjacent rows or columns having the same least squares slope fit to a straight line, with a single point array taken as having zero slope.at n=10A223150
• Triangular numbers T such that sum of the factorials of digits of T is prime.at n=25A242831
• Number of ways to write n as an ordered sum of 10 prime powers (including 1).at n=9A341139
• Triangular numbers such that the sum of cubes of their digits is prime.at n=22A345351
• Number of unordered pairs of distinct strict integer partitions of n.at n=30A366132
• Expansion of 1 / ((1-x)^4 - x^2)^2.at n=8A392582