A024742 a(n) = A024741(n+3)/6.

1, 2, 4, 11, 28, 68, 169, 470, 1276, 3395, 9016, 25736, 71785, 197084, 543136, 1562987, 4441888, 12490268, 35118241, 102094436, 293497252, 836212259, 2384733976, 6972232316, 20220310225, 58240787582, 167689305760, 493029967907, 1438787149228

Offset

1,2

Links

Table of n, a(n) for n=1..29.

Crossrefs

Cf. A024741.

Sequence in context: A099412 A100094 A099525 * A024962 A202085 A122423

Adjacent sequences: A024739 A024740 A024741 * A024743 A024744 A024745

Keyword

nonn

Author

Clark Kimberling

Extensions

a(28) corrected by Sean A. Irvine, Jul 21 2019

Status

approved