611415

Appears in sequences

• Triangle of coefficients of even modified recursive orthogonal Hermite polynomials given in Hochstadt's book:P(x, n) = x*P(x, n - 1) - n*P(x, n - 2) ;A137286; P2(x,n)=P(x,n)+P(x,2*n): second type.at n=55A136587
• Numbers k such that both k and k+1 are bi-unitary abundant numbers.at n=28A318167
• Numbers k such that both k and k+1 are infinitary abundant numbers (A129656).at n=9A327635