148896

Appears in sequences

• 58 'Reverse and Add' steps are needed to reach a palindrome.at n=1A065323
• a(n) = sum of absolute-valued coefficients of (1+2*x-x^2)^n.at n=11A084776
• Numbers k such that the centered triangular number A005448(k) = 3*k*(k-1)/2 + 1 is a perfect square.at n=12A129444
• Number of (n+4)X6 0..2 matrices with each 5X5 subblock idempotent.at n=12A224619
• Indices of centered triangular numbers (A005448) that are also centered octagonal numbers (A016754).at n=5A253673
• Number of 2n-step closed paths on quasi-regular rhombic (rhombille) lattice starting from a degree-6 node.at n=5A357771