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

1,1

Links

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

Formula

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

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

Crossrefs

Cf. A381767.

Sequence in context: A120755 A227633 A270011 * A111183 A330821 A248827

Adjacent sequences: A382128 A382129 A382130 * A382132 A382133 A382134

Keyword

nonn

Author

Mike Sheppard, Mar 16 2025

Extensions

More terms from David A. Corneth, May 20 2025

Status

approved