A059296 2-boustrophedon transform (see A059294) of 0, 1, 0, 0, 0, ...

0, 1, 3, 7, 31, 173, 1199, 9831, 93303, 1004817, 12107795, 161367055, 2356740567, 37428107645, 642165083775, 11836940014639, 233283750994767, 4895016784086017, 108952695421053699, 2563927258693534391, 63603177623431960239, 1658851308207579983341

Offset: 0

Author

N. J. A. Sloane, Jan 25 2001

Keywords

• nonn