99457

Appears in sequences

• Nonnegative integers n such that n^2*(n+1)*(2*n+1)^2*(7*n+1)/36 is a square.at n=9A007750
• Odd bisection of A007750.at n=4A007752
• Numerators of continued fraction convergents to sqrt(777).at n=7A042498
• a(n) = 128*n^2 - 32*n + 1.at n=27A157331
• a(n) = 128*n^2 + 2528*n + 12481.at n=17A157436
• a(n) = 2048*n^2 - 128*n + 1.at n=6A157448
• Fold a square sheet of paper alternately vertically to the left and horizontally downwards; after each fold, draw a line along each inward crease; after n folds, the resulting graph has a(n) regions.at n=20A342759