A026718 T(2n-1,n-1), T given by A026714.

1, 5, 25, 128, 664, 3468, 18179, 95486, 502130, 2642373, 13910933, 73254357, 385819274, 2032271705, 10705592360, 56397552658, 297114357284, 1565295609305, 8246610192370, 43446914289095, 228899806427083, 1205963067794476

Offset

1,2

Links

Table of n, a(n) for n=1..22.

Crossrefs

Sequence in context: A307879 A082308 A270767 * A060928 A002002 A182626

Adjacent sequences: A026715 A026716 A026717 * A026719 A026720 A026721

Keyword

nonn

Author

Clark Kimberling

Status

approved