A032056 Shifts left under "BGJ" (reversible, element, labeled) transform.

1, 1, 1, 4, 8, 38, 326, 2160, 14092, 119776, 1726772, 17087084, 202819128, 2671905592, 43460010864, 653865234996, 10669423514948, 193608386667944, 3712432320889004, 73424512657548576

Offset

1,4

Links

Table of n, a(n) for n=1..20.

Crossrefs

Sequence in context: A032138 A032151 A032042 * A214535 A321717 A228755

Adjacent sequences: A032053 A032054 A032055 * A032057 A032058 A032059

Keyword

nonn,eigen

Author

Christian G. Bower

Status

approved