44290

Appears in sequences

• Denominators of continued fraction convergents to sqrt(854).at n=7A042649
• Numbers k such that k | 6^k + 5^k + 4^k + 3^k + 2^k.at n=34A057256
• (Prime(prime(n))^2-1)/24.at n=38A092772
• Number of nX5 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in decreasing order.at n=5A166848
• Pentagonal numbers (A000326) that are the sum of five consecutive pentagonal numbers.at n=0A257714
• a(0) = 0, a(1) = 1, for n > 1, a(n) = a(n-1) + a(n-A002487(n)).at n=31A283474
• First differences of A283474.at n=31A283479
• First differences of A283474.at n=37A283479
• a(n) = (A001359(n+1)^2 - 1)/24, where A001359 = lesser of twin primes; or: pentagonal numbers (A000326) whose indices are twin ranks (A002822).at n=35A308344
• For the numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^2 where w, x, y, and z are all positive integers, this sequence gives the corresponding values of y+z.at n=34A343860
• Pentagonal numbers which are products of four distinct primes.at n=27A381919