A188625 A bisection of A188624.

1, 1, 3, 7, 19, 56, 180, 596, 2015, 6904, 23923, 83755, 296084, 1056095, 3797790, 13757665, 50164787, 183980036, 678215028, 2511483176, 9337575130, 34840575458, 130412367572, 489546890178, 1842438724560, 6950471604901, 26276784902865, 99539079724648, 377759500611913, 1436093975018569, 5468247624237042, 20853026397347178

Offset

1,3

Links

Table of n, a(n) for n=1..32.

Crossrefs

Cf. A188624, A156043.

Sequence in context: A305197 A071716 A306088 * A258171 A263334 A005506

Adjacent sequences: A188622 A188623 A188624 * A188626 A188627 A188628

Keyword

nonn

Author

N. J. A. Sloane, Apr 06 2011

Status

approved