A249308 Central terms of triangle A249307.

1, 2, 8, 16, 96, 192, 1280, 2560, 17920, 35840, 258048, 516096, 3784704, 7569408, 56229888, 112459776, 843448320, 1686896640, 12745441280, 25490882560, 193730707456, 387461414912, 2958796259328, 5917592518656, 45368209309696, 90736418619392, 697972450918400

Offset: 0

Author

Reinhard Zumkeller, Nov 14 2014

Keywords

• nonn

Comments

a(n) = A128014(n) * 2^n = A249307(n,n);

A098430(n) = a(2*n).

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 0..1000

Crossrefs

Cf. A249307, A128014, A098430.

Programs

Haskell

a249308 n = a249307 n n