42276

Appears in sequences

• Icosahedral numbers: a(n) = n*(5*n^2 - 5*n + 2)/2.at n=25A006564
• Indices k such that 10 plus the k-th triangular number is a perfect square.at n=11A154143
• Partial sums of A000262.at n=7A173227
• Replace the word A214317(n) with its position in A007931.at n=14A214318
• a(n) = (n + 1)*(6*n^2 + 15*n + 4)/2.at n=23A269232
• a(n) = (1/24)*(n + 3)*(3*n^3 + 5*n^2 - 6*n + 16).at n=22A290061
• Number of defective (binary) heaps on n elements from the set {0,1} with exactly one defect.at n=22A372628
• Number of integer partitions of n > 0 such that the least and greatest parts are not both odd (equivalently, their product is even).at n=43A391230