A263896 Central terms of triangle in A075383.

1, 6, 15, 28, 90, 66, 91, 285, 153, 190, 588, 276, 800, 972, 435, 496, 1485, 1750, 703, 2223, 861, 989, 3060, 1175, 3136, 3723, 1431, 4290, 4731, 1829, 2257, 6489, 6175, 2747, 6831, 2627, 2993, 9150, 8547, 4187, 10044, 3901, 10795, 11223, 7921, 11830, 12741

Offset: 1

Author

Reinhard Zumkeller, Nov 29 2015

Keywords

• nonn

Comments

a(n) = A075383(2*n-1,n).

Crossrefs

Cf. A075383.

Programs

Haskell

a263896 n = a075383 (2 * n - 1) n