A026114 T(4n,n), where T is the array defined in A026105.

1, 3, 28, 275, 2834, 30020, 323817, 3537963, 39025125, 433641593, 4846850372, 54432520983, 613727606977, 6942918090500, 78767492060334, 895824168454107, 10210180642895226, 116591635975080084, 1333619552180129775, 15277391011739272885, 175247987032943618365

Offset

0,2

Links

Table of n, a(n) for n=0..20.

Crossrefs

Cf. A026105.

Sequence in context: A307885 A076723 A198887 * A181069 A239297 A287884

Adjacent sequences: A026111 A026112 A026113 * A026115 A026116 A026117

Keyword

nonn

Author

Clark Kimberling

Extensions

More terms and offset corrected by Sean A. Irvine, Sep 16 2019

Status

approved