252146

Appears in sequences

• a(n) = 2*a(n-1) + a(n-2) + 1, a(0) = 1, a(1) = 2.at n=14A098790
• Nonnegative integers n such that 2n^2 + 2n - 3 is square.at n=14A124124
• Numbers k where d/k reaches a new record, with d the distance from the k-th triangular number to the nearest square.at n=19A229117
• a(n) = a(n-1) + 3*a(n-2) + a(n-3) with a(0) = 1, a(1) = 3, a(2) = 6.at n=14A375726