A026095 a(n) = Sum{T(k,k-1)}, k = 1,2,...,n, where T is the array defined in A026082.

1, 3, 6, 9, 22, 55, 153, 431, 1235, 3555, 10278, 29793, 86562, 251983, 734776, 2145825, 6275148, 18373299, 53856156, 158025189, 464112300, 1364247183, 4013353935, 11815188003, 34807249137, 102606325139, 302646363728, 893175905781

Offset

1,2

Links

Table of n, a(n) for n=1..28.

Crossrefs

Equals A024998(n) + 3, n>1.

Sequence in context: A050889 A327140 A329863 * A061929 A358403 A318032

Adjacent sequences: A026092 A026093 A026094 * A026096 A026097 A026098

Keyword

nonn

Author

Clark Kimberling

Status

approved