912128

Appears in sequences

• Triangle read by rows: T(n,k), n >=1, 0 <= k <= C(n,k), = number of n X n symmetric positive definite matrices with 2's on the main diagonal and 1's and 0's elsewhere and with k 1's above the diagonal.at n=78A080858
• Triangle T, read by rows, where column 0 of T^m = {C(m*2^n, n), n>=0} for all m.at n=16A136470