Column 2 of triangle A152406; also, column 0 of matrix cube of A152406.
A152409
Column 2 of triangle A152406; also, column 0 of matrix cube of A152406.
Terms
- a(0) =1a(1) =3a(2) =18a(3) =150a(4) =1546a(5) =18642a(6) =254690a(7) =3861782a(8) =64059002a(9) =1150296082a(10) =22180511810a(11) =456345207854
External references
- oeis: A152409