A026111 a(n) = T(2n-1,n), where T is the array defined in A026105.

3, 16, 89, 496, 2795, 15884, 90909, 523312, 3026850, 17577660, 102425257, 598575368, 3506930635, 20591787300, 121145018325, 713948286528, 4214030403902, 24907512574608, 147403116947718

Offset

2,1

Links

Table of n, a(n) for n=2..20.

Crossrefs

Sequence in context: A356402 A378334 A347930 * A026330 A146963 A074562

Adjacent sequences: A026108 A026109 A026110 * A026112 A026113 A026114

Keyword

nonn

Author

Clark Kimberling

Status

approved