OFFSET
0,3
LINKS
Firdous Ahmad Mala, Some New Integer Sequences of Transitive Relations, J. Appl. Math. Comp. (2023) Vol. 7, No. 1, 108-111.
FORMULA
a(n) = Sum_{k=0..n} (-1)^k*binomial(n,k)*A006905(n-k).
EXAMPLE
a(3) = A006905(3) - 1 - 3 - 30 = 137, where the numbers of transitive relations involving 0,1,2 elements on a 3-set are 1,3,30.
CROSSREFS
KEYWORD
nonn
AUTHOR
Firdous Ahmad Mala, Oct 02 2021
STATUS
approved