142884

Appears in sequences

• Sum of first n cubes; or n-th triangular number squared.at n=27A000537
• Squares of even triangular numbers.at n=12A014738
• Squares of even hexagonal numbers.at n=6A014772
• a(n) = (10*n + 8)^2.at n=37A017366
• a(n) = (11*n + 4)^2.at n=34A017438
• a(n) = binomial(n+2, 2) + binomial(n+4, 5).at n=26A027658
• Numbers whose sum of non-unitary divisors is a prime and sets a new record for such primes.at n=21A063760
• Squares such that the sum of two neighboring term is also a square.at n=14A072471
• Digital sum of n = sum of palindromes from the smallest prime factor of n to the largest prime factor of n.at n=37A074310
• Sum of 2nd, 4th, 6th, 8th and 10th powers of divisors are divisible by sum of divisors.at n=13A074471
• Refactorable numbers k such that the number of odd divisors r is odd, the number of even divisors s is even and both r and s are divisors of k.at n=8A120349
• Even refactorable numbers k such that the number r of odd divisors is odd, the number s of even divisors is even, both r and s are divisors of k and k is the first number for which the triple (r,s,t) occurs, where t is the number of divisors of k.at n=6A120359
• Squares s(n) such that cube(n)-square(n)-1 and cube(n)+square(n)+1 are primes.at n=14A155931
• Squares which can be represented as the sum of consecutive primes in more than one way.at n=40A163246
• Perfect squares that are a product of two triangular numbers.at n=33A169835
• Triangle T(n, k) = (binomial(n-1, k-1)*binomial(n, k-1)/k) * ( 3^(k-1) if floor(n/2) >= k, otherwise 3^(n-k) ), read by rows.at n=40A174346
• Ordered forests of k increasing plane unary-binary trees with n nodes.at n=30A185423
• Numbers with prime factorization p^2*q^2*r^6 where p, q, and r are distinct primes.at n=6A190469
• Number of bases to which terms of A194946 are pseudoprime.at n=34A195327
• Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=25A207363