A032004 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A032004

Shifts left under "AFJ" (ordered, size, labeled) transform.

1, 1, 1, 7, 15, 105, 855, 7855, 55975, 560065, 8413815, 92433795, 1445733485, 21748130145, 378156976785, 6718626421035, 128657800331555, 2540367695055365, 57535394030907155, 1264457062012294015

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

LINKS

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

CROSSREFS

Sequence in context: A144536 A231399 A231466 * A032018 A243470 A068366

Adjacent sequences: A032001 A032002 A032003 * A032005 A032006 A032007

KEYWORD

nonn,eigen

AUTHOR

Christian G. Bower

STATUS

approved