A382131 Complement of A381767.

2, 3, 5, 15, 46, 136, 385, 1072, 2949, 8063, 21977, 59814, 162683, 442329, 1202507, 3268905, 8885983, 24154809, 65659808, 178482121, 485164996, 1318815514, 3584912605, 9744803182, 26489121842, 72004899025, 195729609091, 532048240238, 1446257063900, 3931334296724, 10686474581075

Offset: 1

Author

Mike Sheppard, Mar 16 2025

Keywords

• nonn

Links

• Chai Wah Wu, Table of n, a(n) for n = 1..100

Crossrefs

Cf. A381767.

Formula

a(n) ~ e^(n-1) (conjectured)

e^(n-1) - 2*n^2 < a(n) < e^(n-1). - Yifan Xie, May 20 2025

Extensions

More terms from David A. Corneth, May 20 2025