A201078 Twice A137829.

2, 4, 12, 24, 50, 92, 172, 296, 510, 840, 1372, 2176, 3424, 5268, 8040, 12072, 17976, 26428, 38564, 55680, 79846, 113500, 160320, 224768, 313320, 433916, 597788, 818840, 1116238, 1513900, 2044180, 2747520, 3677864, 4902732, 6510960, 8613840, 11356208

Offset: 0

Author

N. J. A. Sloane, Nov 26 2011

Keywords

• nonn

Links

• Brian Drake, Limits of areas under lattice paths, Discrete Math. 309 (2009), no. 12, 3936-3953. See Corollary 7.