142174944340
domain: N
Appears in sequences
- Number of 4 X 7 matrices with elements in 0..n with each row and each column in nondecreasing order. 4,7,n can be permuted, see formula.at n=7A140908
- Number of 7 X 7 matrices with elements in 0..n with each row and each column in nondecreasing order. 7,7,n can be permuted, see formula.at n=4A140911
- a(n) is the number of secondary GL(4) invariants contructed from n+3 distinct four component vectors.at n=7A383823